Does the N7 have fast charge capability in stock form? It takes a while for my son's tablet to charge so I was thinking of rooting it solely for fast charge capabilities...and maybe to put a nice rom on it, heh.
Wall charging isn't so bad, but if it dies in the car and we use one of those cigarette lighter USB chargers, it takes forever just to get enough juice to turn on and stay on.
It's friggin annoying.
May want to invest in a charger that can supply 1-2 amps.
"fast charge" has to do with the amount of current provided by a "live data" USB connection (e.g. a computer or USB hub compatible with fast charging) - but it has nothing at all to do with dumb chargers. And in fact, the amount of current in "fast charge mode" is actually LESS than that provided by the OEM N7 charger.
What najaboy is saying is that if you want the same result as the (dumb) N7 OEM charger, get a (dumb) car charger that is spec'ed for 2A @ 5V.
Related
I recently bought new tab, it is getting charged normally when plugged in power socket. But when i plug it in laptop USB port or any PC port, it would not charge instead I can transfer data etc. I am using the original USB cable which came in box. Does any one has faced same issue?
Sent from my GT-P1000 using XDA App
charging
Samsung have engineered it so you have to even use their mains charger. Car chargers and wall chargers have to be Samsung tab brand. Not sure but there is talk of AVUSB charge cable being released. Pretty sure this has already been covered.
Turn off the screen and wifi and data network and it will charge very slowly over usb.
Sent from my SGH-T849 using XDA App
The fact of the matter is the tablet requires more/not the right amount of power that your USB port can deliver.
We always here all these theories about why.. but here is the simple and only reason why.
To keep the techinical stuff short and simple, Li-Poly and other batteries have a predetermined lifetime and one of the determining factors to how long they last is the rate of charge (charge rate) time and the exact amount of mHa capacity of the battery.
This is NOT a Samsung marketing scheme as it is exactly the same reason the iPad cannot be charged through USB.
I'll give you a quick example:
If you buy rechargable batteries, Ni-Mh that state they can be charged at 2500mHa (capacity/rate) and you charge them on a 15 minute charger that delivers the right amount of power (1.2 volts) and not the correct rate (lets say they are rated for 2500 and you use a charger thats rated for more) this causes the battery life to be deminished drasitcally.
If you charge the same 2500mha batteries with a lower rating charger, they will take a lot longer to charge completely since it is at a slow mHa, but also this slower charging will provide a longer battery life.
Therefore their charger (and this is the reason why you must use their charger or any charger with the same mHa rating) is made to provide the optimal amount of charge rate (mHa) giving you the best battery life vs charge time.
In conclusion the Tabs hardware will limit the rate of charge through USB in order to:
a) Not overload the power on your USB, given that all this varies according to each system configuration (although it should not! but reality is.. it does)
and
b) In order to not improperly charge your tab, reducing your battery life.
I know the technical parts are vaguely/poorly explained but I work with Li-Po and other types so this is the simplest way to explain all this without causing too much confusion.
Hope this made sense
Cheers
tj1984 said:
Samsung have engineered it so you have to even use their mains charger. Car chargers and wall chargers have to be Samsung tab brand. Not sure but there is talk of AVUSB charge cable being released. Pretty sure this has already been covered.
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Click to collapse
Not true.
Samsung is using standard chargers that are wired to identify themselves as high current chargers. A non Samsung charger / external battery will likely have the same wiring because this wiring is part of the usb-specification.
The Tab will even charge from your usb-port but only slowly and if you turn off the screen since usb-ports only have 500mA (the charger has 2A).
So all the Tab does is check for this high-power-wiring. If it detects it it shows you the charge-icon, if it doesn't it assumes a usb-connection to your computer and does not pretend to charge (even if it does).
Interesting! So then a generic car cig lighter accessory with a standard USB port on it should charge it as a high output conection, right?
I am able to charge my Tab using usb connection to my PC by turning the device off. Same with an Energizer XP8000 external battery. Leaving the device on will take a long time to charge or not at all if you are using it while charging.
is it okay to use a portable battery charger other than a wall outlet (or car battery) to charge my n10? like one of these battery packs?
for example: http://www.staples.ca/en/Aluratek-1...oduct_184717_2-CA_1_20001?externalize=certona
would it cause an damages to my tablet ever? anyone had any bad experiences? the good thing about these is that you dont have to worry about a power outage and your tablet getting bricked or something while charging from a power socket in a wall
can anyone provide any links to a good portable charge that is compatible with the n10?
anyone know if its okay to use one of these battery chargers?
I don't have personal experience with this combo, but it should work as long as you get enough voltage and amps. I rolled my own iphone charger from a battery powered fan and it worked great.
Just make sure you check that tablets are supported, given they need more juice (I think).
anyone?
It will work if you have the good voltage (5V) and enough current you can take.
The nexus 10 wall charger can output 2A but if you have 1A or 500 mA it will also work but the charge will be slower and perhaps you will need to shutdown the tablet to charge.
So prefer a charger with 2A output.
Also there is a thing with the connection inside the charger which tell the tablet how much current it can take over the usb connection (see post http://forum.xda-developers.com/showthread.php?t=2090208), some cable or adapter can do the trick or you can do it yourself if you want ...
So we just upgraded to Note 3 from our galaxy 3 (wife and I)...
I noticed the charger is a 2 amp charger compared to the SGS 3's 1 amp.
I started reading some threads here and found out the USB 3.0 cable will not charge the phone faster unless it's plugged into the computer.
Apparently the PCM also limits the phone to charging at 900ma. (not verified)
so I'm curious now.... at what amps does this phone charge? I'm trying to get a spare charger to keep in the car, and also trying to get a usb car charger if I can benefit from the 2.1 amp one instead of the 1 amp one that's in there now....
Can anyone tell me if I should get a 2.1amp charger or stick with 1 amp chargers as the spares if it'll still charge at 900ma?
I'm using USB 2.0 cables btw. (unless I can charge faster with the USB 3.0 when plugged to a car charger or the wall, which I apparently won't from my research here)
While I await for responses, I will plug the charger into my voltage/amp reader and we'll see how much power is being drawn, which might give an idea as to how many ma it's charging at.
For whoever that wants to know this information, these are my findings from my meter that is able to measure how much power is being drawn (kill a watt P3)
with the stock charger and USB 2.0 cable (3.0 made no difference) the phone will charge at 900ma with the screen on. If the phone is shut off, or screen is off, it goes to 1500ma. Very steady at those.
with the SGS3 charger that I had, it's a constant 900ma whether screen is on or off... (1.0 amp charger)
now I guess I will have to see if this is the case with any 2.1 amp charger, or if it's specific to samsung's charger with snapdragon's quick charge feature. I believe only certain chargers allow use of this.
I don't know, I'm getting 1800mA by using stock wall charger with USB3 cable and 450 with USB2 cable. I know GS3 would charge at faster rate when using original Samsung wall charger and cable, which had data lines shorted, not sure if it's the same with Note3.
I don't remember for sure, but I think charging rate from computer was pretty much the same 450mA regardless of USB3 or USB2 port or cable. I remember this because I was surprised they didn't take advantage of higher power ratings with USB3, but maybe it was just my particular setup. I used application that shows charging rate, so all is with phone on, but it makes perfect sense, about 2 hours from 0 to 100% charge, if you allow some extra time for trickle charge at the end, losses and usage.
pete4k said:
I don't know, I'm getting 1800mA by using stock wall charger with USB3 cable and 450 with USB2 cable. I know GS3 would charge at faster rate when using original Samsung wall charger and cable, which had data lines shorted, not sure if it's the same with Note3.
I don't remember for sure, but I think charging rate from computer was pretty much the same 450mA regardless of USB3 or USB2 port or cable. I remember this because I was surprised they didn't take advantage of higher power ratings with USB3, but maybe it was just my particular setup. I used application that shows charging rate, so all is with phone on, but it makes perfect sense, about 2 hours from 0 to 100% charge, if you allow some extra time for trickle charge at the end, losses and usage.
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Click to collapse
and how did you measure this 1800mA?
razorseal said:
and how did you measure this 1800mA?
program is called galaxy charging current, you can get it in the play store.
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You can't compare that app to a meter that shows you the actual current being drawn
Sent from my SAMSUNG-SM-N900A using Tapatalk
why not? How do you think your meter is working? Phone has similar IC. How did you come up with your numbers first of all? I thought you plug Kill a watt into outlet and it shows what the charger is using at 110v and at about 10 watts(or is it 220-240v for your location), your unit maybe at the limit of accuracy, since the amperage would be somewhere around 100mA, where your device is designed more for larger power consumption like fridge or TV running 300-1000watts and few amps. Is your unit somehow capable of measuring what the charger is outputting and if so, how?
BTW you can't get more than 900mA from PC even over USB3, thats the max limit.
I checked again: galaxy S3 wall charger is giving me 600mA, Note3 charger with USB2 cable gives me 1200mA and Note 3 charger with USB3 cable pumps out 1800mA, computer USB gives 450mA regardless of computer port, but there is something wrong with the USB3 cable that I got, is not connecting properly and I have to wiggle it to connect so maybe bad cable is the reason I don't get higher charge rate from PC USB3.
Hello XDA members,
I would like to ask you if you know a if it is possible to charge my Nexus 6P with the usage of my USB 3.0 OTG Cable and a Male-to-Male classic USB 2.0 Cable ...
At the moment my phone is charging with 0.2A maximum, even with a 2A wall charger ...
The only working charger is my classic Nexus 6P TypeC-TypeC ..
Have a nice day,
George.
I don't know about the first part of your question regarding the OTG cable, but can say that any compliant USB-A cable is limited to 2.4A in the absolute best of conditions. You may find an answer in the Accessories sub-forum where most of the charger and cable discussions are.
When you say your phone is charging at 0.2A using a 2A wall charger, that may be normal. Are you measuring the input current when the battery is completely dead, or closer to full? The phone itself limits the charging current by it's built-in charging profile, so it will only accept full charging from 0-40% then taper off to zero as it approaches being fully charged. See the 6P charging graph. Even with the stock USB-C to USB-C 3A charger, you're only getting less than 0.2A amp during the last 10% of charging. Not only that, but the phone keeps accepting even less current for almost an hour past 100%.
Here's a solution for my problem, first let me you clear the problem/ my case:
I want to use my Nexus 6P as a Android desktop computer.
I already found a way to charge and use multiple USB devices (using a USB hub)
for more info check out General Section I have posted a guide so you can do it too.
I also bought a chromecast because sadly we cannot use HDMI, there is no DisplayPort on our Nexus 6P.
Everything were working perfectly except the fact that my phone was discharging, while actually charging with a 2.0A USB 2.0 wall charger.
Here is the solution:
FInd a way to power up a 16V case fan (those fans that are a inside your desktop case) and make a stand for your phone, COOL YOUR SNAPDRAGON BABY!
Phone is still charging slowly, while the temperature is at 24Celsius stabilised!
Have a nice day,
Have fun with this it is suuuper cool gadget-like creation if you consider doing it too,
George.
I'm looking at avoiding powerbricks in my house. I've been upgrading the outlets in my house to USB's simular to this: https://www.lowes.com/pd/Legrand-Radiant-15-Amp-Tamper-Resistant-Outlet-3-1-USB-White/50253183
would I still be able to charge my phone and if so how fast? This would be the pain reason why I don't get the 6t and end up with a pixel or something.
thanks.
I have a similar setup in my kitchen and had a 3T. You can definitely charge your phone using an outlet like that and USB A to USB C cable, but it will charge slower than if you were using the wall plug and cable that come in the box with the phone. In my understanding the fast charging through VOOC/Dash charging is enabled by the wall plug, which does the heavy lifting of converting the power. This approach is supposedly better for the long term battery life. It definitely keeps the phone cooler and running smoother if you use it while charging. That said, I doubt that charging through a non-OP charger is bad for the phone or battery. It will just take longer.
How much slower? I think I set this thread up wrong, Im sorry.
Sorry I don't have any metrics. I mostly used the charger that came with my 3T. I'd say if you want the phone mostly charged in a short amount of time you need to use the charger that comes with the phone. If you aren't going to be using it for a while you can use any other USB C cable or charger you have available.