Database Users

Charge Cable Issues

I purchased a cheap (.99 cent) USB data cable for my SGS off of eBay from Korea. It worked well, or so I assumed at first, charging my device and working fine with the outlet charge that came in my box as well as working for data transfer.
Originally my first charge of my SGS lasted a poor 12 hours. The second charge lasted a much better time. And the longest mine has ever gone without being plugged in is about 32 hours, this is with low use however. Maybe 5 minutes of talk time total, 100 sms sent and several web pages viewed on WiFi and 3G. This is much much better compared to my 3gs.
Anyways.. After about 4 days of the new cable I had noticed that my charge time was lasting significantly shorter amounts of time every day I used it. Each morning the phone would confirm fully charged and I would unplug it. It would usually end up dieing sometime before I went to bed. Basically it would only last 14 hours and this is with very minimal use. Mostly standby, in fact, probably about 12 hours of those 14 hours is standby.
So I switched back to my original cable that came in the box when I purchased my SGS and today the phone is holding a charge much better and still indicates full charge after 10 hours since I woke up this morning.
I guess what I am trying to say is that it seems (for whatever reason and if you know PLEASE enlighten me) that the after market cable was doing something strange. Even though it charged my device and the SGS indicated it was at 100% please unplug. It still didn't last as long as when I use the original cable. Anybody know why?
So I suggest steering away from cables that may not be official. Or at least the ones that cost less than a dollar XD.

i think the problem is with the battery and not the cable
the cable either works, or don't work, there is no in between.

I was reading a thread last night on XDA about cheap cables but i forget which one. Im sure it was in Galaxy Accessories though.
The guys there were having similar charging issues or it not even recognising the phone being connected. One of them checked the cable on a multimetre and found it was giving a lower voltage than the original (if i remember right it was about 0.2 volts) so maybe that's your cause?
You would think a cable is just a cable but it seems lower costs mean lower quality materials.

i was not talking about the current transfer,
i was talking about the full charge, and drainging quick, has no relation to the cheap cable
yes the cheap cable might be poor at charging the battery, but it doesn't affect how the battery discharges after it's full

afleck said:
I guess what I am trying to say is that it seems (for whatever reason and if you know PLEASE enlighten me) that the after market cable was doing something strange. Even though it charged my device and the SGS indicated it was at 100% please unplug. It still didn't last as long as when I use the original cable. Anybody know why?
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He seems to be still using the same battery but has switched the cable and the problem has gone or at least improved.
I remember my old HTC Diamond, charged via USB (lower voltage) would last less than half the time on a supposedly 100% charge. A full charge on the mains socket (higher voltage) would bring the longer holding charge time back.
I guess we need an update from the OP as to whether changing only the cable 'did' fix it.

the point is i don't see any scientific reasonable logic behind it.
AFAIK that's not how the charged power inside a battery works.

Well I have read a bit more about charging from a USB port on the computer than charging from the wall charger.
Many people seem to experience shorter battery life when charging a device (specifically I read about the iPhone cause it was there) connected to a PC via USB. Usable battery time increased when charging via outlet charger.
I am sure there is a scientific explanation for this. Just because we don't know it doesn't mean it doesn't exist. I am interested in this and am going to research it some more.
Perhaps some people should try charging via a PC and USB to see if their battery life diminishes more quickly.

i charge via the PC at work and home for my internal phone battery
the spares are charged separately with a stand alone charger
i see no difference in runtime between wall or PC charged batteries
i'm a heavy user i can drain the entire battery in 4 hours be it wall charged or PC charged
my average battery time when i don't go heavy on it, is 12 hours
on a normal day i need 1 battery pack for AM, and another 1 battery pack for PM

How long does it take your Nexus to fully charge?

Just wondering, how long does it take you guys to fully charge (From anything below 20% to 100%) your nexus 7? Because I've seen a few posts about battery related problems, and personally I think mine chargers slower than it should.
Also, when I use a wire to extend the charger, it's as if it wont charge, for it to fully charge i'd have to leave it on for hours without use, Since they're aren't any plugs where I'd usually sit to use it, I need to move somewhere else cause the wire is quite small.
For example, I've had it on charge since 2PM today, when I plugged it in it was at 14% battery, now (4:20 PM) it's at 63%. This has been without use, just sitting there charging. Plugged in via the charger and wire that come with it, to an extension with 3 other plugs in it.

I received my N7 with about 40% charge and it seemed like it took a really long time on that first full charge. It has been better since. I have heard if you are not using the original cable for the N7, it will dramatically increase the time it takes to charge and it won't show the charging icon. The supplied cable is USB 3 and your other cables are most likely USB 2. You might want to buy a 6 foot or 2 meter USB 3 cable for convenience. Also, use the original 2 amp charger it came with.

Groid said:
I received my N7 with about 40% charge and it seemed like it took a really long time on that first full charge. It has been better since. I have heard if you are not using the original cable for the N7, it will dramatically increase the time it takes to charge and it won't show the charging icon. The supplied cable is USB 3 and your other cables are most likely USB 2. You might want to buy a 6 foot or 2 meter USB 3 cable for convenience. Also, use the original 2 amp charger it came with.
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Well, that explains why the extender doesn't work, but I haven't been using that to charge it since I noticed it slowed it down allot. I've only been using the stuff it comes with ever since I noticed that. Still VERY slow though, it's only just reached 96% since starting charging it at 2am. so it's taken 5 hours to get from 14% to 96%, pretty sure this isn't right.

I've collected some data on N7 charging and cables issues here.
http://forum.xda-developers.com/showpost.php?p=29983624
My completely drained N7 (<1%) takes approximately 3 hours and 49 minutes to completely charge it (N7 powered off during charging).

janedoesmith said:
I've collected some data on N7 charging and cables issues here.
http://forum.xda-developers.com/showpost.php?p=29983624
My completely drained N7 (<1%) takes approximately 3 hours and 49 minutes to completely charge it (N7 powered off during charging).
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Which charger do you use?
And good to know it isn't a problem with my nexus I suppose.

Dazzuh said:
Which charger do you use?
And good to know it isn't a problem with my nexus I suppose.
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OEM charger and OEM cable.

Nexus 10 taking more than a day to charge!!

Like the title says, my dad just bought a Nexus 10 and when he was charging it from 20%, it's taken more than an hour to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable. Is it a defective unit? I know about the Pogo charger, but I'm sure he'd rather not spend $25 on it just to find out it doesn't work.
Any suggestions or ways to fix this?
Thanks.
edit: To make things even sound worse, it only charged 2% in 1 hour and 30 minutes.

|| Acer || said:
Like the title says, my dad just bought a Nexus 10 and when he was charging it from 20%, it's taken more than an hour to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable. Is it a defective unit? I know about the Pogo charger, but I'm sure he'd rather not spend $25 on it just to find out it doesn't work.
Any suggestions or ways to fix this?
Thanks.
edit: To make things even sound worse, it only charged 2% in 1 hour and 30 minutes.
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All I know is that on mine takes about 9 hours to charge with the original charger. The first time I've charged it from 16% with my Galaxy SIII cable, and it took over 14 hours.

That does seem long. I have the pogo charger and it does charge faster.
Before you buy the pogo, are you using the chargers that came with the N10? When I charge my N10 from a laptop/PC, it does charge slowly. So make sure you're charging with the correct voltage/amps.
Good luck!

I'm having a similar issue since the OTA update to 4.4.2.
I'll try changing USB cables, but I'm not optimistic. I'm tempted to try a factory reset if a different cord doesn't work.
Sent from my Nexus 10 using Tapatalk

Do you use the tablet while charging?
Is NFC enabled?
What setting is the GPS on; device only?
Sent from my Nexus 10 using XDA Premium 4 mobile app

|| Acer || said:
Like the title says, my dad just bought a Nexus 10 and when he was charging it from 20%, it's taken more than an hour to charge to 50%.
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With Wifi on, NFC off, Location set to device only, bluetooth off, screen off, using my Pogo cable I get about 22% charge per hour so from 0% to 85% is 4 hours. Whilst on Pogo if I turn brightness to full and sound full then charge is held roughly flat. I moved to Pogo from the supplied cable as when watching stuff even when connected it was discharging, so now I'm never really out of power unless I stay unplugged a long time (about 6 hours unplugged max on low brightness)

anthony2424 said:
Do you use the tablet while charging?
Is NFC enabled?
What setting is the GPS on; device only?
Sent from my Nexus 10 using XDA Premium 4 mobile app
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Click to collapse
This situation happens when the tablet isn't even on, so certain settings being enabled are not the issue.
And for more info, he is using the charger that came with the tablet, so we've just decided that we'll just send it back and get a new one because the battery is obviously defective.

|| Acer || said:
This situation happens when the tablet isn't even on, so certain settings being enabled are not the issue.
And for more info, he is using the charger that came with the tablet, so we've just decided that we'll just send it back and get a new one because the battery is obviously defective.
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Have you tried a different cable/charger? AN hour to charge from 20% to 50%? Sounds about right to me. I always switch mine off when charging, I can live without when it' off. :good:

yets said:
Have you tried a different cable/charger? AN hour to charge from 20% to 50%? Sounds about right to me. I always switch mine off when charging, I can live without when it' off. :good:
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I think clearly a human error in the word chosen explains it.
Instead of "...was charging it from 20%, it's taken more than an hour to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable."
it would make more sense if written "....was charging it from 20%, it's taken more than a day to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable. "
.... then the later post of its a dud and its been replaced makes sense....

nigelhealy said:
I think clearly a human error in the word chosen explains it.
Instead of "...was charging it from 20%, it's taken more than an hour to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable."
it would make more sense if written "....was charging it from 20%, it's taken more than a day to charge to 50%. With that logic, the battery is only charging 30% a day, which means it would take 3-4 days from 0%-100%, and that simply is unacceptable. "
.... then the later post of its a dud and its been replaced makes sense....
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Ahh, I see. Good call in getting it replaced. I hope you have a better experience.

here are a few points
1) the AC USB come with N10 charge up to 2A.
2) the mini USB limit to about 1A
3) if you use other mini charger, that 1A is even smaller.
4) N10 battery is HUGE comparing to all tablet out there. It will take a long time to charge
Solution: get the pogo charging cable that cost $25 (very expensive and can only use for charging), that will fully charge 2A to your tablet which should reduce the time to less than 4hrs given no other power hog apps running at the same time. It will charge slower if that power hog app running too. You can tell by how warm/hot your tablet gets when running such app.
btw, go look at the disassemble of the N10. That battle makeup most of the tablet. LOL

workerantDroid said:
here are a few points
1) the AC USB come with N10 charge up to 2A.
2) the mini USB limit to about 1A
3) if you use other mini charger, that 1A is even smaller.
4) N10 battery is HUGE comparing to all tablet out there. It will take a long time to charge
Solution: get the pogo charging cable that cost $25 (very expensive and can only use for charging), that will fully charge 2A to your tablet which should reduce the time to less than 4hrs given no other power hog apps running at the same time. It will charge slower if that power hog app running too. You can tell by how warm/hot your tablet gets when running such app.
btw, go look at the disassemble of the N10. That battle makeup most of the tablet. LOL
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Agree, BUT once you get >85% the rate of charge intake drops. I can get to 85% in 3.9 hours using Pogo cable, but that last 85%-100% is slower. My battery meter sees one kink 85-90 another 90-95 and a slow crawl 95-100. As the battery is not taking up 2A >85%, all chargers, all cables, will largely take the same 85%-100% but the Pogo cable with 2A input will get you to 85% quicker.
I have moved to a dual 2.1A output PSU.

duplicate post.

HyperTension said:
duplicate post.
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I know you revised the post but just looked at the link to the PSU you mentioned.
Note that $10 one is dual USB socket but only 2.4A total meaning if it is charging the N10 taking 2A it can only offer 0.4A to something else meaning that other thing can only be something like a phone. More importantly is the opposite if you connect a powerpack USB battery which takes say 1.5A or 2A then your Pogo cable cannot deliver its full capability.
The PSU I mentioned earlier is dual 2.1A both concurrently meaning it can charge the N10 and something else also power-hungry like charging a 2A input or 1.5A input USB battery.
There are PSUs out there which can do 4 lots of 2A concurrent, I didn't get one as they were getting chunky and personally prefer two PSUs, a 2x2A + 1A for total 5A which does my N10, my USB battery (2+2) and my phone (1) concurrently taking two power sockets.
Check the details of specifications of these devices, PSUs and batteries vary wildly.

[Q] Pogo Cable Issue

Hello there developers,not sure if I'm posting on the right place but I have a really big problem. My new Pogo Cable arrived and I was so excited to use it,but my happiness didn't lasted fort too long. The problem is that the Tablet while charging with the Pogo cable is either charging slow ,or neither at all. This issue is available for both Lollipop and Kit-Kat,have upgraded an then downgraded with the hope that the issue will be solved. The original Micro -Usb cable works good but with the Pogo Cable in the Battery Monitor Widget it appears "Discharging" and "AC Plugged",and the charging rate is booring slow. Had the idea to measure the Voltage and the current Flow with a multimeter and got the surprise that while the voltage is 5.12 V the amperage is 0.12 A ,while the original charger pumps up to 2 Amps. Could this be the issue? Is there some electrical switch that should open and release all those 2 Amps or is this Cable a Hoax or something that is not fully functional? Thanks in advance,hope that you guys will enlight me somehow!

I've no idea if this is related but be aware that having your pogo plug connected while also having anything connected to the microUSB will stop charging. The charging icon (lightning bolt) will still appear but that I'd a false indicator. This limitation is due to the Android kernel and is present in all versions of Android.
I exclusively use a pogo plug to charge my Nexus 10 and it has always worked on all versions of Android including 5.0.2 which I'm on today. For me pogo plug charging has always been about 25 percent faster then USB charging.
Sent from my Nexus 10 using XDA Premium HD app

My experience is exactly the same as 3DSammy reports.

well my warranty is expired so i Decided to "surgically" dissmantle my Nexus 10 in a heroic attempt to find the cause and I have made a breakthrough (or at least I tought so). I got another Pogo cable ,and this one was good,the voltage was exactly 5 Volts measured and the Amperage that I got was 2.21 Amps measured with a 6 Ohm fuse,all these values where from the original Samsung charger. All things good,but the Tablet is still not charging at all,the same Lightning animations and even after 3~4 hours still no charge at all,and this is Lame in my opinion. So after opening the tablet,I got the idea to short the 3 and 4 pogo pins together,and assumed that this will draw all the power that the battery needs to charge,the idea was working i got 20% more power draw than the usb cable BUT for only let's say Half of hour ,and then the same old story,battery was discharging but the lightning animation was on. This is not so good and my suppose is that the Power Management iC from the motherboard is some how not managing the Pogo charge at all :laugh: so my next idea is to wire the charging Pogo pins directly to the battery and hope for the best. Regards! :good:

moky900 said:
well my warranty is expired so i Decided to "surgically" dissmantle my Nexus 10 in a heroic attempt to find the cause and I have made a breakthrough (or at least I tought so). I got another Pogo cable ,and this one was good,the voltage was exactly 5 Volts measured and the Amperage that I got was 2.21 Amps measured with a 6 Ohm fuse,all these values where from the original Samsung charger. All things good,but the Tablet is still not charging at all,the same Lightning animations and even after 3~4 hours still no charge at all,and this is Lame in my opinion
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I've got one of the original n10 from first day of issue. My battery is going to hell after being used and charged every day for the past couple years. It's been on/run everyday since Dec. 2012. I have always had a problem charging while using it. My display is always set at about 1/3 bright. When my battery drops to critical, I plug in the pogo and usually put it in sleep mode to charge. It will quick charge that way.
If I still need to use it at critical battery level, plugged into the pogo plug, it maintains power and possibly gives it a very slow increase in charge. Almost none noticeable, but will maintain power level (unless tons of graphic, camera or movies along with full bright screen).
I've just taken it for granted that this is how it works. Pogo plug will maintain battery while using and will switch to quick charge once put into sleep mode or powered off. It's always acted that way, so I have never known anything different.
Ed

metaled222 said:
I've got one of the original n10 from first day of issue. My battery is going to hell after being used and charged every day for the past couple years. It's been on/run everyday since Dec. 2012. I have always had a problem charging while using it. My display is always set at about 1/3 bright. When my battery drops to critical, I plug in the pogo and usually put it in sleep mode to charge. It will quick charge that way.
If I still need to use it at critical battery level, plugged into the pogo plug, it maintains power and possibly gives it a very slow increase in charge. Almost none noticeable, but will maintain power level (unless tons of graphic, camera or movies along with full bright screen).
I've just taken it for granted that this is how it works. Pogo plug will maintain battery while using and will switch to quick charge once put into sleep mode or powered off. It's always acted that way, so I have never known anything different.
Ed
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Well I'm sure about what did you said,but in my opinion this is a marketing bulls$h*t. Why would I use that Pogo cable if it's role is to charge only on sleep mode and powered off?I ordered because I thought that like the instructions of the pogo says:" it will charge the battery even when you are using it for movies and browsing,being more handy ,because you have the micro USB port free." I play games ,I surf the web,so my tablet is hooked up to a USB hub so I have connected a mouse,a keyboard and a game controller,so my USB port is full,and I hoped the pogo will help. Charging only on sleep is equal to zero for me,I need live charging,in the same time as the tablet runs games and other stuff. In my opinion this "glitch" should have been told on the pogo site,so I could full understand this cable and it's role. Shame on Samsung,30$ .for nothing! Thanks for the help!

Battery Issues

I know a lot has been posted about the N7 2012 battery problems. There are two major issues that I have been dealing with for well over a year now.
1. It takes 8 + hours for my device to fully charge. depending on how low the battery is.
2. My device will not charge with the screen on. if I play a movie with it plugged in it will not even hold a charge. I use TomTom for GPS & this is extremely frustrating.
It has been documented that the USB port could be the cause of this. I did have the USB assembly replaced once on it back in March of 2014. Also had the mainboard replaced twice in the same time period. Those repairs were due to my device not being recognized by any computer. Even after this series of repairs my device had the same issues.
Has anyone replaced the battery because of a similar issue? I am half tempted to scrap it be Android 5.0 performance suck s for an Asus Zenpad.
Thanks

same issues
jadesse said:
I know a lot has been posted about the N7 2012 battery problems. There are two major issues that I have been dealing with for well over a year now.
1. It takes 8 + hours for my device to fully charge. depending on how low the battery is.
2. My device will not charge with the screen on. if I play a movie with it plugged in it will not even hold a charge. I use TomTom for GPS & this is extremely frustrating.
It has been documented that the USB port could be the cause of this. I did have the USB assembly replaced once on it back in March of 2014. Also had the mainboard replaced twice in the same time period. Those repairs were due to my device not being recognized by any computer. Even after this series of repairs my device had the same issues.
Has anyone replaced the battery because of a similar issue? I am half tempted to scrap it be Android 5.0 performance suck s for an Asus Zenpad.
Thanks
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1. takes long time to charge fully.
2. battery wont charge when using the tab.
but my backup is good as for now...
I am on CM12 Snapshot.

Weak Charger?
I'd recommend, to almost everyone, to pick up a "Charger Doctor" off of eBay for a few bucks. These will give you a readout of the chargers working voltage and amperage. For these tablets a charger should be putting out at least an amp (1000ma) @ 5 Volts during charge. Many chargers are overrated ( these tablets come with a 5V @ 2 amp charger) and it sounds like yours is not putting out enough juice. I seriously doubt that the USB port has anything to do with your problem. My charger doctor has identified dead and weak chargers tons of times. Some chargers I got from China were rated at [email protected] and put out only 100ma! No wonder my phone wasn't charging. I took a picture of the readout and they refunded my money. One of these should help you sort out your problem.

I can definitively say that it is not an issue with the charger or the battery. I just put in a new battery a few minutes ago. My N7 is still charging @ 0.46 Amps. That charge will output 1.2 Amps when connected to me Dell Venue Pro 8. There is definitely something wrong with my N7 just like so many others. So, i will be putting it to rest in favor of an Asus Zenpad here shortly.