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I have been going through 10" Android tablets like good beer (no driving of course). So far the A500, Thrive, Prime, A510, Excite Quad 16gb and now the TF300. Many reasons for returning them:
A500 = Weak wifi and visible verticle screen lines.
Thrive = Kept it, but sold recently due to poor Tegra 2 video support
Prime = Weak wifi, iffy touch response
A510 = Gets too warm/hot on right side- this also impacts battery life if sustained. Also has visible verticle lines, but not as bad as A500.
Excite Quad = Bad light bleed, poor file support, battery drain issues and crazy big connector (the footprint of that and the cable is about the same space as the tablet). File management was also an issue (like the Thrive, the Excite is poor in this regard).
Office Max has (at the moment) the TF300 on sale for $350 and the keyboard for $100, so got both for the same price as the A510 and Excite. This seemed too good to not jump on, so got both yesterday morning. Here is a review/comparison with the A510 & Excite:
Build = Good, but A510 and Excite are better
Display = Some light bleed bottom right corner, but IMO, better display than the A510 and Excite and GREAT touch response like the Excite.
Sound = Kind of weak and not on same level as the A510 and Excite. Headphone sound is good.
Performance = About the same as the A510, which is very good. Excite seemed a little better and benchmarks support this.
Heat = Coolest tablet I have used. The A510 gets hot when using the GPU and even the Excite gets warm.
Wifi = Great. All three perform fine, but the 300 appears tops.
File management = Great. Seemless with dock. I have a 64gb loaded in the tablet and a 128gb card loaded in the dock. All apps work fine and media is stutter free. Ditto for 64gb thumbdrives too. IMO, this tablet equals the A510 and both are FAR better than the Excite.
GPS = Seems fine, but I do not use it on tablets.
Keyboard = Better than expected and game emulators are more playable than using virtual pads (though touch is good). Handy if no controller is around. Speaking of controllers, they work as good as my laptop.
Battery life = Only had less than 24 hours, but battery life is in between the A510 and Excite, which is good. Seems the battery life will actually be better than the A510 with dock attached.
Stuff I do not like:
Plastic docking section. Not sure how long this will hold up compared to metal. Metal would seem a better option for the back and the curved section the tablet seats in.
Proprietary connector. I prefer the A510 design since can use a normal micro USB in a pinch for trickle charge with a computer.
No USB connector on tablet. This seems flat out silly to me. Even Samsung is adding them now. I have already had a few times where I was at another computer, but had no way to transfer data. At least with the iPad the cable is so common you can get one in a pinch- not so with this. The good news is the Asus cable is small like iPads and not a giant monster like the A510 (what were they thinking?).
I will restate more directly- It is flat out STUPID to have no USB, but no connector on this tablet is by design, since Asus has already stated with the Prime and Transformer they made the most margin on the docks, so want people to buy them.
As a complete system, the tablet and dock rock, but just as a tablet, the usb issue is huge to me. If the total price was $550 rather than $450, I would not have bought this, since too close to laptop price territory for me. Not sure I would just have the tablet though, so total price drove me to the TF300.
Net result is all current tablets have issues and there really is no "perfect tablet", IMO. If I did not have or want a laptop, even at $550 the TF300 is good. For what I paid though, the TF300 and dock rocks hard!
Note: Acer just released their A700 and the performance seems to support concerns Anandtech had that the Tegra 3 efficiency sweet spot is 1280X800 and anything beyond that appears to trend in diminishing returns. Until Nvidia pulls an Apple and makes a more robust GPU for the Tegra 3, I think users are better off with a good IPS 1280X800 display.
Asus does make a 40-pin to USB 2.0 converter for the tablet. It costs around $32 on E-bay.
You stated that you didn't like it not having one because you couldn't trickle charge it from a computer. USB connectors have an output of .5A max, the TF300 charger is a 2A. That effectively means that you'll have to be connected to a PC 4 times longer to get the same charge as from the charger. Even charging an advanced phone from the USB port takes forever. In my opinion, that is completely unreasonable as an expectation. USB on these things is for data transfer, not charging.
I really love how fast the TF300 charges. From empty to full in about 2 hours.
meatrocket said:
Asus does make a 40-pin to USB 2.0 converter for the tablet. It costs around $32 on E-bay.
You stated that you didn't like it not having one because you couldn't trickle charge it from a computer. USB connectors have an output of .5A max, the TF300 charger is a 2A. That effectively means that you'll have to be connected to a PC 4 times longer to get the same charge as from the charger. Even charging an advanced phone from the USB port takes forever. In my opinion, that is completely unreasonable as an expectation. USB on these things is for data transfer, not charging.
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The reasons were charging and data transfer. The nice thing about trickle charge is you can use the device or transfer data and not take a battery hit. Handy if without the stock charger for extended time.
rushless said:
The reasons were charging and data transfer. The nice thing about trickle charge is you can use the device or transfer data and not take a battery hit. Handy if without the stock charger for extended time.
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True that! But come on - 10 -15 hours worth of transfer? Still, we would have to have some type of USB cable, standard or proprietary. Standard would definitely be better. Like you said, at least it's not the 510's cable!
Edit :was reading and posted by mistake.. Anyways I'm loving the Tf300t . I use this as a netbook replacement since all i use latops is for internet and MSword and this lasts much longer. Sometimes II'm using this all day and with wifi on i have to charge it once through the day with the dock. but thats over 12 hours nonstop with no screen off ... I use it heavily constantly streaming video,torrenting, web etc so its reasonable I think
meatrocket said:
True that! But come on - 10 -15 hours worth of transfer? Still, we would have to have some type of USB cable, standard or proprietary. Standard would definitely be better. Like you said, at least it's not the 510's cable!
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Fair points. Sadly, I am having massive battery drain issues I mentioned in another thread. It has happened twice in a row in a very clean environment (restarted and no apps using notifications). If I do not figure this out soon I will return both. That said, since using a stock device there should be NOTHING to figure out- it should just work.
I am wondering if leaving my 128gb sd card in is leaving the dock active, but battery use only shows (two tasks) most percentage being display and then some for idle. No media activity and the files on the card are PSX games and video (the PSX has .nomedia in the directory). The Toshiba Excite would burn over 12%, but was a media task doing it (Toshiba issue). In this case, only the display and idle shows as using battery.
Just last night in 6.5 hours from 100% in both, it burned through the dock and 35% of the tablet. The display was off before going to sleep and checking in the middle of the brief night. I got a great deal on the both, so this is bitter irony.
rushless said:
The reasons were charging and data transfer. The nice thing about trickle charge is you can use the device or transfer data and not take a battery hit. Handy if without the stock charger for extended time.
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Not really sure what the problem is... The part of the cable that plugs into the charger is a USB connection, so you can transfer files to/from your comouter. It also trickle charges just like you want. I know because when I was messing with creating a Debian chroot image, my tablet was connected to my laptop for a long time and inched its way from ~50% to 100%. It took a loooong time, but it charged.
Really, the only downside to the proprietary connector is that you can't just use any micro-USB cable you want; it has to be the Asus cable.
Cool. Did not know on the trickle. Now, if I can just solve the battery drain to avoid a return. Love the dock & tablet system, but the battery drain is a killer.
rushless said:
Cool. Did not know on the trickle. Now, if I can just solve the battery drain to avoid a return. Love the dock & tablet system, but the battery drain is a killer.
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I'm watching your other thread on the battery issue. Please update when you know something. Sorry to hear you're having this problem. There's nothing that sucks worse than a new toy that won't work right!
Does the trickle charge only work with the tablet? While connected to my computer when using with dock attached, the dock drained to nothing and the tablet did not charge once the dock was dead.
I guess I answered my own question perhaps, since the dock did not charge at all and no way for the tablet to use the USB source since feeds through the dock which died. It is a series charge flow.
How are those who've got their N10 finding the charging speed? Mine arrived yesterday and has been charging very slowly, as the reviews had said.
In six hours last night on charge whilst left on standby, it charged about 20%. Is everybody else finding a similar situation?
I'm looking forwards to the pogo-pin chargers/docks being released, which will hopefully charge a bit faster! If anybody knows how to hack something together to make use of the faster charging speed on the pogo connection then please do share! :good:
Of course, you have to look at the amperage and watt of your power supply. Even among the AC powered chargers, they vary greatly, and here you are talking about charging this behemoth with a measly powered USB.
Sent from my SGH-T889 using Tapatalk 2
If it takes 6 hours to charge 20% on a 2amp charger than that is seriously messed up.
BamAlmighty said:
If it takes 6 hours to charge 20% on a 2amp charger than that is seriously messed up.
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Not messed up, just physics. There's an awful lot of resistance in a 9000MaH battery, and a standard microUSB (or even full-sized USB) connector can't handle the amperage that a faster charge would require. Which is why most big tablets had proprietary connectors up to this point.
But guess what? Google and Samsung knew this, it's why the N10 has one too, we just don't have the cable for it yet.
Pogo charger is coming, supposed to be at least twice as fast. Don't know why it was delayed, but most likely either a certification issue, or worry about Apple suing for it being too much like a Mag Safe connector.
http://forums.androidcentral.com/google-nexus-10-tablet-forum/225484-pogo-charger.html
Some guy posted the Pogo charger here. I wonder where he got it.
Buy a powered USB unit and plug into that, mine puts out around 5 amps
realyweely said:
Buy a powered USB unit and plug into that, mine puts out around 5 amps
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Are the slow speeds people are getting from the wall charger our from a pc connection?
Are you saying a powered USB hub is charging it quicker than the mains charger supplied?
Thank you
Swype'd at pace from my Galaxy S2
I don't even charge phones via normal USB on PC anymore, let alone a tab. I've found the charging time on the N10 to be ok, provided the screen is off and also if I'm downloading something it seems to slow the charging down. Other than that it's not lightning fast, sure, but I'm ok with it. And so much the better when they release the pogo charger.
charged mine over night yesterday from 10% to full wall mains, but when the screen is one it doesn't seem to charge just maintains current charge which is a bit annoying
Dja357 said:
How are those who've got their N10 finding the charging speed? Mine arrived yesterday and has been charging very slowly, as the reviews had said.
In six hours last night on charge whilst left on standby, it charged about 20%. Is everybody else finding a similar situation?
I'm looking forwards to the pogo-pin chargers/docks being released, which will hopefully charge a bit faster! If anybody knows how to hack something together to make use of the faster charging speed on the pogo connection then please do share! :good:
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Try turning anything that uses power off (i.e)...turn the screen brightness the lowest it will go, turn the tablet on airplane mode. Turn the sounds off.
I find that helps my phone charge faster, maybe this will help with the tablet.
Are you talking about charging via USB on a PC, or via the PSU?
Through the PC will be very slow at a maximum of 500mA, but the PSU should be able to power it? My N7 and Galaxy Tab 10.1 had 2A chargers - what does the N10 come with?
I am regretring more and more buying this. I haven't received mine yet but the amount of pixels is kind of ridiculous. I would have been happy with 1920x1200 with that beasyly hardware. Saw a review that said their battery only lasted 4 hours because of the insane power the screen sucks away.
Also the fact that this pogo charger will probably cost $50+ and it is something that should have been standard either way.
Oh Asus infinity..why must your I/O be so god awful. You were almost the perfect tablet
Sent from my SCH-I535 using xda app-developers app
Yeah charging is slow, though not as bad as 20% in 6 hours! I think mine was charging faster than that even when I was using it. I think trade off is worth it though with the microUSB connector.
The iPad 3/4 is no better... Takes forever to charge
duarian said:
I am regretring more and more buying this. I haven't received mine yet but the amount of pixels is kind of ridiculous. I would have been happy with 1920x1200 with that beasyly hardware. Saw a review that said their battery only lasted 4 hours because of the insane power the screen sucks away.
Also the fact that this pogo charger will probably cost $50+ and it is something that should have been standard either way.
Oh Asus infinity..why must your I/O be so god awful. You were almost the perfect tablet
Sent from my SCH-I535 using xda app-developers app
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It's just a cable, the charger is already capable of 2a.
cspiby said:
It's just a cable, the charger is already capable of 2a.
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Well if the cable is only $5-$10 then that's great, however I foresee them milking that cable for all its worth . I'll see when I get mine today how I feel
Sent from my SCH-I535 using xda app-developers app
Lumsdoni said:
Are the slow speeds people are getting from the wall charger our from a pc connection?
Are you saying a powered USB hub is charging it quicker than the mains charger supplied?
Thank you
Swype'd at pace from my Galaxy S2
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No but it will charge at the same speed as a Mains charger and thats better than plugging into your laptop or PC
realyweely said:
No but it will charge at the same speed as a Mains charger and thats better than plugging into your laptop or PC
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I got about 40 % in 2 hours off mains
Swype'd at pace from my Galaxy S2
It's nice to know that we have the Pogo pins option for faster charging. It makes me feel better now going through with my decision to get N10. I am a heavy media/game consumption guy so this device is perfect for my needs.
Sent from my GT-N8013 using Tapatalk 2
I must say I would hate to spend an extra $55 (assumed price) for a pogo charger for a tablet I've already spent $550 (tax+ship)
Hello everyone, i've been a lurker for over a year now, primarily at the note 2 forums.
I've recently sold my n-7100, and now i've got a Note 10.1 N-8000. It's great and all, though one gripe I have would be the --SLOW- charging of the thing. Sometimes it'd even drain while being used (akin of other former phone, the n-7000 and it's 0.7 amps charging.)
Cutting it short, i've been using Andreilux's fantastic Perseus kernel for the longest time, and one ingenious feature he included would be the ability to modify the charging rates. Based on my limited knowledge, samsung pretty much bottlenecks this for safety purposes, such as having that 100ma margin thingamajigger when it detects unstable currents, hence lowering the input current. His kernel had the ability to turn that off, and pretty much allow a full 2A to stream in while charging my (former) note 2. (not to mention a full 1.5a while charing on my usb3 port.)
I'm putting this up in the air for everybody else, for apparently development for the n-8000 (rom/kernelwise) isn't as lush as with the Note 2.
I hope this post of mine doesn't end up in the recesses of the forums, for I feel that this would be a very important feature for us owners of the wonderful Note 10.1.
Thank you.
Carnauba Red said:
Hello everyone, i've been a lurker for over a year now, primarily at the note 2 forums.
I've recently sold my n-7100, and now i've got a Note 10.1 N-8000. It's great and all, though one gripe I have would be the --SLOW- charging of the thing. Sometimes it'd even drain while being used (akin of other former phone, the n-7000 and it's 0.7 amps charging.)
Cutting it short, i've been using Andreilux's fantastic Perseus kernel for the longest time, and one ingenious feature he included would be the ability to modify the charging rates. Based on my limited knowledge, samsung pretty much bottlenecks this for safety purposes, such as having that 100ma margin thingamajigger when it detects unstable currents, hence lowering the input current. His kernel had the ability to turn that off, and pretty much allow a full 2A to stream in while charging my (former) note 2. (not to mention a full 1.5a while charing on my usb3 port.)
I'm putting this up in the air for everybody else, for apparently development for the n-8000 (rom/kernelwise) isn't as lush as with the Note 2.
I hope this post of mine doesn't end up in the recesses of the forums, for I feel that this would be a very important feature for us owners of the wonderful Note 10.1.
Thank you.
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Think usb3 is at best 900ma. How long does yours take to charge?. Neved been a problem for me. Longer is the best for the battery.
Takes around 5 hours+, i only gain around 2-3% per hour with the screen turned off. :x Battery monitor widget reports a fluctuation between +850~+90 mA. On my old note 2 I'd have no problem having a consistent 1.6+ amps, and Galaxy charging current (on my note 2) states that i'm running a full 2A, or rather my phone is sucking as much juice as it can to recharge without samsung's safety gates bottlenecking it. Now I know you folks care a lot about your devices and would say that it's bad and it'l decrease the battery's lifetime, etc. I've come to accept whatever risks there are.
I just really wish someone could pull off what Andreilux was able to do for my note 2, where I didn't have to go through the trouble of modifying my usb cable's pins/rummaging through "working" chargers that'l deliver its rated capacities and what not. Unticked the "Disable power margin", as well as this other option I can't remember what it was exactly, and bam, original charger+cable was delivering 2A without any hicks, chaging 3100mah in around...2 hours or less. And plugged in to my usb 3 slot, GCC reported 1.5A being delivered.
*aother note on my 10.1 n-8000
And often the battery would DRAIN even while it's being charged. A few reconnects of my usb cable and it delivers around +250ma worth of charing, which is SLOW. I'd be lucky if it sticks to 1000+.
So there. If the master himself (andreilux) is unable to provide one for our note 10.1, i'm pretty sure there are other brilliant minds with great capacity who'd be able to give this feature for us.
I've seen in other threads how they were discussing/showing the tweaks towards the charging current being done, like what's going on here. http://forum.xda-developers.com/showthread.php?t=1327873
Hell sign me up! Ive had my 10.1 since the day they came out and Im So SICK of the slow charging! I feel I should wake up to a 100% charged device if I remember to plug it in before I go to sleep! my Note2 charges about 1.5 hrs, My tablet, who knows Sometimes 5 hrs sometimes 10!
Sent from my GT-N8013 using Xparent Purple Tapatalk 2
Jonathanpeyton said:
Hell sign me up! Ive had my 10.1 since the day they came out and Im So SICK of the slow charging! I feel I should wake up to a 100% charged device if I remember to plug it in before I go to sleep! my Note2 charges about 1.5 hrs, My tablet, who knows Sometimes 5 hrs sometimes 10!
Sent from my GT-N8013 using Xparent Purple Tapatalk 2
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Been checking the forums day by day with crossed fingers as to having some magical kernel Implement this tweak. :fingers-crossed:
Aye, my tablet's charging is acting weird as well, 8 hours or more for a charge? christ!
Just got the note 10.1 2014. What's everyone averaging on the screen on time?
Sent from my SM-N900V using XDA Premium 4 mobile app
10 - 11 hours screen on time
Sent by my Note 10.1 2014
benni2903 said:
10 - 11 hours screen on time
Sent by my Note 10.1 2014
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Around same amount as his,
+-9% each hour. And charging time sucks as hell. 7 hours to charge to 100%
Anicane said:
Around same amount as his,
+-9% each hour. And charging time sucks as hell. 7 hours to charge to 100%
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7 hours? Do you use the device while charging?
Charging time should be around 4 hours
Sent by my Note 10.1 2014
Sweet. I'm loving it so far
Sent from my SM-P600 using XDA Premium 4 mobile app
benni2903 said:
7 hours? Do you use the device while charging?
Charging time should be around 4 hours
Sent by my Note 10.1 2014
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Exynos variant does not support fast charging while Qualcomm does...
35 hours or more of total battery life with 6 1/2 to 7 hours of screen time. I play a lot of intense games so my screen time is lower, but I've easily been able to get 5 1/2 of screen time out of this thing playing Galaxy on Fire 2 and it's like one of the most demanding mobile games available.
djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
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Ok...but I thought because of the ~8200mAh battery and the 2000mAh charger the regular charging time would be around 4 hours
Sent by my Note 10.1 2014
How are you getting around 9 mine averages only 6 and I mainly read on mine. 1/4 brightness??
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globen said:
How are you getting around 9 mine averages only 6 and I mainly read on mine. 1/4 brightness??
Sent from my SM-P600 using Tapatalk
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I was using previous generation of 10.1 on almost minimum brightness, and was getting more than 10h of screen time. Yes, I've been using it indoors mostly, and my eyes weren't asking for more. I am getting new 10.1 in couple of days, and hope to have similar SoT...
djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
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the exnyos does have a full powered charge at up to 80% then trickles to 100%. it takes mine about 4-5 hours to go 0-100. it doesn't use qualcomms quick charge tech, but it doesn't trickle the whole way. if it takes 7 hrs then the charger or cable could be bad or the tablet may not be telling the charger to send 2amps.
madsquabbles said:
it takes mine about 4-5 hours to go 0-100.
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It's pretty slow. Almost 30% slower than the N10.1-12 a lot of us came from. It's the move from Samsung's proprietary 30-pin connector to standard microUSB. The N10 using a pogo pin charger (vs. its standard microUSB) is about 30-40% faster than what's shown below.
BarryH_GEG said:
It's pretty slow. Almost 30% slower than the N10.1-12 a lot of us came from. It's the move from Samsung's proprietary 30-pin connector to standard microUSB. The N10 using a pogo pin charger (vs. its standard microUSB) is about 30-40% faster than what's shown below.
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that article was what concerned me before i bought the tablet, but i went ahead and got it anyway. the only time that mine had actually nearly taken that long was on the first few charges. sometimes it would be stuck at trickle and wouldn't pull the full power (i actually only get an average of 1.6A from the stock charger and cable - I've never verified the volts. i could stick it on my killawatt and see what it pulls. after those few quirks i don't see charge times as long as anand has reported. it's always that last 80% that's a killer. it seem to take from 1.5-2hrs depending. i can go from 37% to 80% in 2hrs then i have to wait nearly as long for the last 20%. i think it's a battery saving technique that samsung is using. toyota's reports showed that charging the battery to 80% capacity extened the life. on my 700t there's a battery saving option that won't charge the battery over 80%.
Quickcharge on USB 2.0?
djurkash said:
Exynos variant does not support fast charging while Qualcomm does...
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But will Quickcharge still work because the first unit utilizing it is the Samsung Note 3 and that one has USB 3.0, Note 10.1 2014 only has USB 2.0?
Chesluk said:
But will Quickcharge still work because the first unit utilizing it is the Samsung Note 3 and that one has USB 3.0, Note 10.1 2014 only has USB 2.0?
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USB 3.0 doesn't impact charging time, at least not yet. And the S-800 version of the N10.1-14 does use the same SoC as the N3 and someone here with a SM-P605 reported getting a full charge in about 5 hours and 80% in 3.
Charging is an interesting story on the Note 3, but primarily because of what doesn’t change. The Note 3 continues to use Samsung’s tablet charging specification and charger, which has 2 amps of maximum output. The Note 3 draws 2 amps over a considerable amount of the charging curve, like other Samsung devices (in the linear part of the charge curve). USB 3.0 doesn’t change things up here quite yet with the new supported charge voltages that are coming eventually with the power delivery specification.
The Note 3 does charge faster overall compared to the SGS4 however thanks in part to the new PMIC (PM8941) which is part of the overall 8974 platform story.
http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review/3
Just curious how accurate screen time readings are. Mine seems to be off. I've been on my device all morning and it seems to not reflect that.
Sent from my SM-P600 using XDA Premium 4 mobile app
Bsmith0731 said:
Just curious how accurate screen time readings are. Mine seems to be off. I've been on my device all morning and it seems to not reflect that.
Sent from my SM-P600 using XDA Premium 4 mobile app
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Depends on the brightness you are using. Like I said i get about 10 to 11 hours screen on time indoors
Sent by my Note 10.1 2014
my battery will only charge to 99%, why?
Sent from my SM-P605 using Tapatalk 4
XGrzesX said:
my battery will only charge to 99%, why?
Sent from my SM-P605 using Tapatalk 4
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lol, that's actually a feature that Donald Trump insisted be included in all white and black Notes to remind people they aren't part of the exclusive 1% who actually have solid gold Notes. Interestingly the solid gold Note consistently shows 1%.
See this is the odd thing - I had this tablet a month ago but got it exchanged because I found a cheaper one anyways on that tablet I am positive I was getting 6hrs screen time which was some youtube videos but majority was browsing the internet and that was it.
However on this new one I just got 9hrs30mins and that was with watching a 2hr movie streaming online, about 2hrs worth of streaming tv shows, loads of web browsing and also a little bit of Youtube...Personally I think this is awesome screen time (Mind you it's my first tablet so nothing to compare to but still). I am very happy with charge (5hrs) and battery drain on this tablet - very nice indeed.
Would love to squeeze 11 hours out of this like someone had in the earlier posts but that seems a tad difficult considering I already have brightness pretty low and all pointless apps disabled.
i have had the V20 for about 12 hours in which time it charged from about 50% to about 75% ... my Note would accomplish the same in about 15 minutes ... and yet the V20 is supposed to run the same type of quick charger on the same size battery ... something about this doesn't rub me the right way
yes i did use the phone and unplug it a few times etc but it still should have been much faster ...
it was connected using its own cable and charger BUT through a USB extension cord ... so then i thought maybe that's the problem - maybe i need a longer type C cable and to get rid of extension cord ... but i need to have an answer to that BEFORE buying new cables ...
so i plugged it in directly ( no extension ) and tried to see if it charges in correct mode ...
and here is where i face plant into a wall of excruciating stupidity ... every single app out there measures charging current, whereas what i really want to know is whether the charger is running at 5V standard voltage or using the quick charge 9V voltage ... amazingly there doesn't seem to be an app to show this - or is there ?
my galaxy note would simply say " adaptive quick charger connected " when plugged into quick charger but the V20 doesn't say anything like that.
accubattery app says my screen on charging rate is 760 ma and screen off is 1760 ma ... and the charger of course states 1.8 A so that's consistent ... but is that at 5V or at 9V ? the charger supports both - which one is it ?
this is killing me - so much stupidity. it shouldn't be that hard to figure out whether the phone is charging correctly or not.
anybody have an idea how i could find out whether the charger is actually stepping up to 9V without physically cutting the USB cable and using my multimeter ?
EDIT: i realized i have a kill-a-watt ( actually two of them ) and i can measure power draw from 120V outlet ... so i did that. the draw fluctuated from about 6 to 13 watt. now if we assume 90% efficiency on the charger then full power would have to draw 18 watt from outlet - clearly it never got close. on the other hand at 5V it should have maxed out at around 10 watt power draw, and it went quite a bit over that so it would seem to be using the 9V mode ...
at this point however i'm up to 90% battery and can't expect it to charge at full rate any more as some battery charging algorithms taper off above 80% or so ...
i tried with and without extension cord and noticed no difference ... also if i remember correctly my Note also charged fine over this same extension cord ... but i'm not sure
EDIT: played with turning off 2nd screen as well as shutting down device completely - this phone is crazy. power draw is all the place - at one point it went to ZERO and stayed there until i unplugged it and plugged it back in, then it would fluctuate between zero and 14 watts ...
you know back in the day i had LG Nitro HD and it had worst battery performance of any phone ever ... and this V20 seems to be living up to that legacy. WTF.
anyway, it seems the charger and the cable and extension are not to blame - it seems there is some kind of software weirdness that is resulting in very sporadic power draw ...
slow charging is one of the reasons i switched from iPhone back to Android - i expected this V20 to perform similarly ( blazing fast charging ) to the Note 4 i had before the iPhone 6S Plus ... but it's charging performance so far is almost identical to the iPhone - slow as a snail.
i already spent $80 on case and screen protector and i'm supposed to spend a bunch more on extra cables and memory card as well as sell my iPhone and at the same time i'm thinking - maybe i should just return it ? going to have to observe it for a while longer before making any decisions either way ... terrible.
The V20 is QC 3.0
The Note 5 is QC 2.0
The V20 will negotiate with a 3.0 charger to tell the charger what power it requires at that moment so power will fluctuate during charging.
this will show you which devices are 3.0 and 2.0
https://www.qualcomm.com/documents/quick-charge-device-list
Quick charging explained
http://www.androidauthority.com/quick-charge-3-0-explained-643053/
nest75068 said:
The V20 is QC 3.0
The Note 5 is QC 2.0
The V20 will negotiate with a 3.0 charger to tell the charger what power it requires at that moment so power will fluctuate during charging.
this will show you which devices are 3.0 and 2.0
https://www.qualcomm.com/documents/quick-charge-device-list
Quick charging explained
http://www.androidauthority.com/quick-charge-3-0-explained-643053/
Click to expand...
Click to collapse
yeah it fluctuates a lot. i gave up on apps and just using Kill-a-watt now which is a physical power meter you insert into 120V outlet. it shows power draw from charger, not output, but we can assume about 90% efficiency from input to output of charger.
i let the V20 drain to 40% overnight and restarted the test today. with the extension cord it went up to 16 watt draw from outlet and stayed there - charge quickly went up to 55% then i tried without the extension cord and now its only at 11 watts. this is with both screens off. so far my conclusion is that using an extension cord makes no difference but the level of charge on the phone does impact the charging speed. you need to drain the phone to measure full charging speed.
i will continue with my testing but i am somewhat relieved. 16 watts is close to spec, in fact the spec is 16 watt but on the OUTPUT side of charger, not input, so i'm withing about 10% of spec.
i'm also a lot less nervous buying charging cables now that i verified 16 watt charging over many years old USB 2.0 extension cord ...
EDIT: wow it went from 55% to 68% while i was typing this message ! this is very different from what i saw yesterday ... it was running at 11 watts while i was typing. looks like the phone charges fast as long as it is: 1) drained and 2) left alone. if the phone is almost full and you keep playing with it the level of charge barely changes.
EDIT: at 89% charge it's now down to just 4 watts power draw from outlet ... 25% of what it was pulling at 40% charge. so far it looks like it tapers charging speed off gradually with charge level - starts early and tapers it off to almost nothing as it nears full charge ... and all the while it fluctuates with processor and screen use and probably other factors such as temperature. maybe the reason it went to 16 watts when i plugged it in the morning is that the phone was cold from not being used all night and perhaps it now warmed up so the power got tapered.
maybe i'll stop testing it - it seems to be working correctly, just not the way i originally expected it to.
overall i'm disappointed with this phone but the only phone i would trade it for is Pixel XL 128 GB Very Black which is unavailable ... so i guess i will keep it.
the phone i'm most impressed with right now is ZTE Axon 7 i got for my mother - it is shockingly good - if it wasn't for FM radio, IR Blaster, Removable Battery, Laser Autofocus, Dual Camera, Dual Screen and Nougat i would even say the ZTE Axon 7 is BETTER than V20. the main problem with ZTE is it's just not expensive enough for my ego - otherwise it is great. the screen is is super sharp, vivid and punchy, the front facing speakers are loud and crisp and then there's the 2 year warranty. i'm jealous ...
but i will stick with V20 to protect my dignity. because let's face it - if i'm out on a date i want to have the latest, most technologically advanced and most expensive phone - not the cheapest phone, even if it is just as good or better. really happy with my decision to get Axon 7 for my mom though. she loves it as well.
The way QC works is that it will charge fastest from low power until around 70-80% and then slow down A LOT to help preserve the battery. That is why you saw a high wattage and then when you got into the 80's you saw a very low wattage.
QC is mainly for you to get 40-50% of battery power in a relative short amount of time when your battery is low.
I bought a little device that measures the voltage and current of the charge. And I'm using my own Quick Charge 3.0 wall charger.
When the screen is off or powered down, it charges at 9V/1.8A max. Resulting in about 16W of power. Which is pretty much what the supplied LG charger delivers.
When the screen is on, it charges at 5V/0.5A
My QC3.0 charger is capable of up to 9V/2A and 12V/1.5A, 18W of power. The V20 doesn't seem to draw that much power. And now I'm starting to doubt the V20 is truly a QC3.0 device.
BozQ said:
I bought a little device that measures the voltage and current of the charge. And I'm using my own Quick Charge 3.0 wall charger.
When the screen is off or powered down, it charges at 9V/1.8A max. Resulting in about 16W of power. Which is pretty much what the supplied LG charger delivers.
When the screen is on, it charges at 5V/0.5A
My QC3.0 charger is capable of up to 9V/2A and 12V/1.5A, 18W of power. The V20 doesn't seem to draw that much power. And now I'm starting to doubt the V20 is truly a QC3.0 device.
Click to expand...
Click to collapse
I'll grab voltage/amp reader that I have at home and test my 3 QC 3.0 chargers I have (I'll drain phone to around 20% and then test them and see how it goes) - I'm going to test with the phone off so it pulls the max and see what it ends up with
I have this at work
https://www.amazon.com/gp/product/B018RR30TK
I have this at home
https://www.amazon.com/gp/product/B01FCZACFA
And this in the car
https://www.amazon.com/gp/product/B01CCBGR1U
g1981c said:
yeah it fluctuates a lot. i gave up on apps and just using Kill-a-watt now which is a physical power meter you insert into 120V outlet. it shows power draw from charger, not output, but we can assume about 90% efficiency from input to output of charger.
i let the V20 drain to 40% overnight and restarted the test today. with the extension cord it went up to 16 watt draw from outlet and stayed there - charge quickly went up to 55% then i tried without the extension cord and now its only at 11 watts. this is with both screens off. so far my conclusion is that using an extension cord makes no difference but the level of charge on the phone does impact the charging speed. you need to drain the phone to measure full charging speed.
i will continue with my testing but i am somewhat relieved. 16 watts is close to spec, in fact the spec is 16 watt but on the OUTPUT side of charger, not input, so i'm withing about 10% of spec.
i'm also a lot less nervous buying charging cables now that i verified 16 watt charging over many years old USB 2.0 extension cord ...
EDIT: wow it went from 55% to 68% while i was typing this message ! this is very different from what i saw yesterday ... it was running at 11 watts while i was typing. looks like the phone charges fast as long as it is: 1) drained and 2) left alone. if the phone is almost full and you keep playing with it the level of charge barely changes.
EDIT: at 89% charge it's now down to just 4 watts power draw from outlet ... 25% of what it was pulling at 40% charge. so far it looks like it tapers charging speed off gradually with charge level - starts early and tapers it off to almost nothing as it nears full charge ... and all the while it fluctuates with processor and screen use and probably other factors such as temperature. maybe the reason it went to 16 watts when i plugged it in the morning is that the phone was cold from not being used all night and perhaps it now warmed up so the power got tapered.
maybe i'll stop testing it - it seems to be working correctly, just not the way i originally expected it to.
overall i'm disappointed with this phone but the only phone i would trade it for is Pixel XL 128 GB Very Black which is unavailable ... so i guess i will keep it.
the phone i'm most impressed with right now is ZTE Axon 7 i got for my mother - it is shockingly good - if it wasn't for FM radio, IR Blaster, Removable Battery, Laser Autofocus, Dual Camera, Dual Screen and Nougat i would even say the ZTE Axon 7 is BETTER than V20. the main problem with ZTE is it's just not expensive enough for my ego - otherwise it is great. the screen is is super sharp, vivid and punchy, the front facing speakers are loud and crisp and then there's the 2 year warranty. i'm jealous ...
but i will stick with V20 to protect my dignity. because let's face it - if i'm out on a date i want to have the latest, most technologically advanced and most expensive phone - not the cheapest phone, even if it is just as good or better. really happy with my decision to get Axon 7 for my mom though. she loves it as well.
Click to expand...
Click to collapse
Just smh at this whole post. I want my 5 minutes back.
Thats weird, Im using my Note 7 charger on the V20 and it charge the phone completely in less that 2 hours. In my case I always drain my phone to 3% and leave it charging up to 100%. I will check again tonight to be sure.
TempezT said:
Thats weird, Im using my Note 7 charger on the V20 and it charge the phone completely in less that 2 hours. In my case I always drain my phone to 3% and leave it charging up to 100%. I will check again tonight to be sure.
Click to expand...
Click to collapse
I wouldn't drain it that low all the time unless you plan on stocking up on batteries or don't mind depleting longevity of battery quicker than usual.
@rbiter said:
I wouldn't drain it that low all the time unless you plan on stocking up on batteries or don't mind depleting longevity of battery quicker than usual.
Click to expand...
Click to collapse
Tmobile Jump on Demand ftw - I only have devices for 5-6 months tops and then get a new phone
Tested this one one when I got home.
https://www.amazon.com/gp/product/B01FCZACFA
I was getting 9.2v @ 1.67A = 15w of power. This is the max that my USB multimeter can do so it would seem that this charger is good for QC 3.0 as it did fluctuate voltage as needed.
nest75068 said:
Tmobile Jump on Demand ftw - I only have devices for 5-6 months tops and then get a new phone
Click to expand...
Click to collapse
That is still wasteful use on a battery and giving the next guy a raw deal. But to each his own. I try and make everything last and more efficient so the next person feels like they are truly getting an almost lightly used phone. If I sell my note4, they're going to get a lightly used battery on top of the 3 extras, with fixed GPS and better reception and cleaned out USB port with no oxidization. Same with my HTC m8 though that was only used as daily driver for two weeks and then a DAP for trips and occasional home use. Definitely selling the m8. They are basically getting a lightly used phone and the battery should still have some good life coming out of it. And personally I think jump is overpriced leasing but I guess you can drive it like you stole it. I prefer handing down the best experience I can to the next person.
@rbiter said:
That is still wasteful use on a battery and giving the next guy a raw deal. But to each his own. I try and make everything last and more efficient so the next person feels like they are truly getting an almost lightly used phone. If I sell my note4, they're going to get a lightly used battery on top of the 3 extras, with fixed GPS and better reception and cleaned out USB port with no oxidization. Same with my HTC m8 though that was only used as daily driver for two weeks and then a DAP for trips and occasional home use. Definitely selling the m8. They are basically getting a lightly used phone and the battery should still have some good life coming out of it. And personally I think jump is overpriced leasing but I guess you can drive it like you stole it. I prefer handing down the best experience I can to the next person.
Click to expand...
Click to collapse
My devices go back to tmobile which then go back for refurbishment. With the V20 it's easy for them to just replace the battery.
And you really think they do?
@rbiter said:
And you really think they do?
Click to expand...
Click to collapse
Who knows but tbh it's not my issue at that point.
nest75068 said:
I have this at work
https://www.amazon.com/gp/product/B018RR30TK
Click to expand...
Click to collapse
Just tested this one at work. Phone was at 28% and I had been streaming Youtube for a good 2 hours before doing the test.
Ended up pulling 9.17v @ 1.68A = 15.40 watts (again maximum that my tester can do).
I'll be ordering a new tester that can handle up to 25A and testing again to see if I can pull the max 18watts of power that the QC 3.0 chargers says it can deliver
nest75068 said:
Just tested this one at work. Phone was at 28% and I had been streaming Youtube for a good 2 hours before doing the test.
Ended up pulling 9.17v @ 1.68A = 15.40 watts (again maximum that my tester can do).
I'll be ordering a new tester that can handle up to 25A and testing again to see if I can pull the max 18watts of power that the QC 3.0 chargers says it can deliver
Click to expand...
Click to collapse
You mean 25W charger?
Which charger is that? Do share, please.
BozQ said:
You mean 25W charger?
Which charger is that? Do share, please.
Click to expand...
Click to collapse
No it's a USB Mutlimeter
https://www.amazon.com/dp/B01J7236K2
It will support up to 30V testing and 5A (but there is no charger that I know of that can do that much lol)
nest75068 said:
No it's a USB Mutlimeter
https://www.amazon.com/dp/B01J7236K2
It will support up to 30V testing and 5A (but there is no charger that I know of that can do that much lol)
Click to expand...
Click to collapse
I see.
This looks like a good device.
There are time on my v10 where I'll plug it in and it will charge at a reduced rate so I have to unplug it and plug it back it and it changes to fast charge, that's just been my experience. This is using factory plug and adapter too.
So you might want to make sure the phone says "fast charging" and not "charging".
Sent from my LG-H901 using XDA-Developers mobile app