When I first got my Galaxy Tab 2 10.1, I was able to charge it with a 3rd party charger at full 2.1A rate. (The 3rd party charger was the one that came with my Nook Tablet.) I verified the fast charging by using Battery Monitor Widget by 3C.
Since two updates ago, I notice that it doesn't charge at full rate (with 3rd party charger) anymore. Now it just shows a red X over the battery when I plug it in. I now can only charge full rate with the OEM charger, which is quite annoying!! I wonder if Samsung has enabled some sensing routine in the recent software updates to sense the resistive network like one in Apple iPad chargers?
Has anybody experienced this problem? It looks like a couple of guys in another forum (link below) have experienced the same....
http://tabletandroideconomici.com/?/forum/samsung-galaxy-tab-2-10-1/43109-battery-not-charging.html
Samsung can be picky about non-OEM chargers and batteries. Your best bet, if you won't shell out for an OEM charger, is to flash a kernel that allows for USB charging, such as Metallice's CM9 kernel, the CM10 stock kernel or (maybe) the CM9-stock kernel.
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So I was wondering if I could find the original G2 wall charger, the one that came in the box. I bought my phone from craigslist and that guy didnt have the charger for some reason. I've been using some motorola one and very happy with it cause it didnt have rapid charging and battery life was great too (not sure if the charger plays a role). But couple weeks ago the wire got loose and wouldnt connect properly, so I bought this: http://cgi.ebay.com/ws/eBayISAPI.dl...331986&ssPageName=STRK:MEWNX:IT#ht_1184wt_950
Ever since I've been using that my phone goes to 100% from 10% in two hours, and battery life has been bad too since using that. I have used the phone the same was as before, I even calibrated it again, tried it with setcpu and no setcpu, used edge only also, tried different roms, used just wifi only etc, and battery life still not same as before. I mean it has to be the charger right? Otherwise it wouldnt have made a difference in using a different one. So I'm trying to find opinions from you guys to see if I can find the original one ( I have no idea what it looks like) or a similar one from ebay/amazon. Thanks for reading!
What is the rated Output on the charger that you have? The stock one is supposed to put out 1 Amp (1000 ma). It isn't uncommon for it to go from 10 to 'full' in 2 hours, but just because the phone shows it full, doesn't mean its there. Are you charging overnight or just for that 2 hour period?
Yes I am charging overnight. Output says 5V, 1A, so I'm guessing thats 1000ma/1Amp?
The G2's cord is rounder at the USB end and the Plug- in end, but I would think it would not make a giant difference since I use a Motorola one since I don't know where my original one went.
OEM HTC charger
I'm not sure if your still looking, but i bought a Brand New OEM HTC charger from eBay. It was the same thing that came with G2. I'm pretty sure by the time you see this it will be sold but they list them everyday so just look at the sellers other items.
Since I'm a new user i cant post links, but the item number is 160619103766
http://web50-shopamerica.htc.com/accessories/accessory_result.htm
quierotacobell said:
Output says 5V, 1A, so I'm guessing thats 1000ma/1Amp?
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That is the maximum current supported by the charger, but the device may request a lower current. Use something like Battery Monitor Widget or Current Widget to see how much current is actually being drawn over the USB port. The most accurate reading will be taken when the screen is off, the CPU is idle and underclocked, all radios are off, etc.
I had a cheap no-name AC adapter for my DZ, but it caused the touchscreen to go bonkers. I ended up buying one of these adapters:
http://canadacomputers.com/product_info.php?item_id=039726
Inexpensive, and having two USB ports is very convenient. One goes to my Mugen DZ charging cradle (phone + spare battery), the other to my BT headset. Any standard USB cable will work. It does not cause problems with the touchscreen, so I can continue to use the phone even while it is charging.
The best I've seen on a DZ is about 650 mA net charge, which means an empty 1800 mAh battery should be fully charged in about 3 hours.
I've seen logs of my dz charging at 680-780mA, so long as you have a 1A output charger it should charge the same. The output is the max rated output, not what its feeding to the phone to charge.
On that note most moto chargers I've seen are 700mA max out and same with a lot of samsung chargers I've owned. I use my original that came with my g2 as well as an old htc diamond wall charger with a sony usb cable lol, I get the same charge from both.
Sent from my HTC Vision using XDA Premium App
Hey Guys,
So I was recently on a trip this weekend and was using Navigation on my Nexus 5 for a 4 hour drive. I had noticed though after a short while that while I had my Nexus 5 plugged into a charger it was still continuing to drain battery.
With my Galaxy Nexus in the past I was able to run Navigation / Music / Etc.. all whilst still charging so it came as a disappointment when I saw this.
I made sure that I was charging on (AC) mode and it still continued to fall, albeit a little slower than (USB) mode though. When I went to the battery usage navigation had taken up about 59% of the battery drain, I was surprised because I though it would have been the screen but that was only like 14% of the battery drain.
Anyone else run into this issue?
Check the Amp output on the charger. Anything less than 1A will not charge the phone while in use.
I had the exact opposite issue with my G-Nex, the "rapid" charger I was using only output 550mAh as opposed to the 1A that is required to charge while in use. I don't believe it is an issue with the phone, it's probably just the charger. $10 to $20 will get you a nice, reliable one with the proper output, and possibly an additional USB port.
Hopefully this helps
Don't buy cheap car chargers, just not enough power. I use a Verizon car charger that has an extra USB port for charging another device and it charges while the device is in use.
Thanks for the input guys, unfortunately the charger was 1 amp that I was using. I do have another car charger that I use and none of them are the cheap USB ones. I guess I'll have to do some more testing with the other car charger that I have.
I was just mainly concerned, not if there was something wrong with the phone, but with the fact that even when charging in AC it wouldn't keep up with navigation's wear on the battery usage.
Thought I would update to confirm that my Galaxy Nexus car dock charger charged it extremely well after testing while navigating.
Definitely was the other one I was using.
When you switched chargers did you happen to also use a different cable? I couldn't get any of three different chargers that I tried to keep up with the GPS battery drain. Then I realized I was using the same cable with all 3 chargers. The problem was that the cable kept the phone in DC charging mode at nothing more than 0.5 amps. I bought this fast charging cable on Amazon and now I actually gain battery percentage even while using my GPS full time.
http://www.amazon.com/gp/aw/d/B0088HTYUE/ref=ya_aw_oh_pit
jalanjkcarp said:
When you switched chargers did you happen to also use a different cable? I couldn't get any of three different chargers that I tried to keep up with the GPS battery drain. Then I realized I was using the same cable with all 3 chargers. The problem was that the cable kept the phone in DC charging mode at nothing more than 0.5 amps. I bought this fast charging cable on Amazon and now I actually gain battery percentage even while using my GPS full time.
http://www.amazon.com/gp/aw/d/B0088HTYUE/ref=ya_aw_oh_pit
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I had exactly the same thing with my old phone and discovered it was the cable not letting more than 380 ma pass through it.
There are apps like this https://play.google.com/store/apps/details?id=ccc71.bmw that let you monitor mah in and out etc so you can test out different leads and chargers
Sent from my Nexus 5 using Tapatalk
the last time my OPO isn't functioning as it should whenever i charge and use my phone at the same time (lowest brightness and no bluetooth) my phone loses percentages. Last night I left my phone in the charger finding it being 20% less then i put it in the charger. other times when i put my phone off in the charger it gains 10% per hour. I have not boot loaded, flashed or done any of that stuff my Rom COS is 12.1 and i have read that there are several others with this problem. also I have read that using another rom will solve this problem. when i tried flashing after installing the TWRP doesn't work and i can't get in recovery-mode.
Im pretty sad that my OPO is having these problems. does anyone has some suggestions on what to do?
Also i had various battery managers who said charging would only take 2 hours and in reality it took 24 h+.
thanks for reading
What charger and cable are you using? Exactly what TWRP did you flash?
As stated by @Heisenberg, the wall adapter/cable are an important factor. Most third party USB wall adapters are 1-1.5 Amps, while the OPO uses a 2 Amp adapter. It could also be a kernel issue, though i havent heard of those with COS 12.1
EDIT: Forgot to mention that it could be the battery as well. I've had my OPO for about a year, and lately it has been charging slowly as well, regardless of software. Some battery degradation is normal in LiPo and LiION batteries.
frap129 said:
As stated by Heisenberg, the wall adapter/cable are an important factor. Most third party USB wall adapters are 1-1.5 Amps, while the OPO uses a 2 Amp adapter. It could also be a kernel issue, though i havent heard of those with COS 12.1
EDIT: Forgot to mention that it could be the battery as well. I've had my OPO for about a year, and lately it has been charging slowly as well, regardless of software. Some battery degradation is normal in LiPo and LiION batteries.
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I want to correct you on one part brother, hope you don't mind.
It doesn't matter even if you use third party USB wall adapters, because your OPO draws only 1.2A of current irrespective of the adapter output. That is the reason why it takes long time to charge. The fast charger provided by the OnePlus is of no use as OPO doesn't take the advantage of it(lack of quick charge feature)
This is not applicable if you tweak it(Custom kernel)
Mr hOaX said:
I want to correct you on one part brother, hope you don't mind.
It doesn't matter even if you use third party USB wall adapters, because your OPO draws only 1.2A of current irrespective of the adapter output. That is the reason why it takes long time to charge. The fast charger provided by the OnePlus is of no use as OPO doesn't take the advantage of it(lack of quick charge feature)
This is not applicable if you tweak it(Custom kernel)
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Unless you're using a 1A charger (Which many cheap drugstore ones are) or charging off of a PC, since the phone cant draw more than is being output.
I bought a brand-new Nexus 5 a few weeks ago. However it came with a 0.85A wall charger which is LG branded... and some 'generic' cable that was included too. Used it twice, but it took around 8-10 hours just to charge 80% of it. I plugged my old Galaxy Ace USB cable to the LG charger and it reduced to two and a half hours, same with my alternate charger from the aforementioned phone (5.0V + 0.7A).
But this led me to a question: Is using alternate chargers with < 1.2A of output a risky way to charge my Nexus 5 battery? I saw somewhere that it might even damage the circuit board (a rare case) and I'm a bit worried about it.
Using a charger with a lower amperage output will take longer for the phone to charge. Also, using a cheaper cable will also lengthen the charge time as the cable can pass the full amount of power to the phone. This has been my experience with using oem cables vs dolls store cables me chargers.
audit13 said:
Using a charger with a lower amperage output will take longer for the phone to charge. Also, using a cheaper cable will also lengthen the charge time as the cable can pass the full amount of power to the phone. This has been my experience with using oem cables vs dolls store cables me chargers.
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But... Will a Samsung wall charger with 0.7A of output damage my phone if I use it as my main charger? Because I also have a chinaphone which came with a bad charger and the Samsung one works fine.
No, the Samsung charger @ 0.7A will not damage the phone. I use a 1.0 A and 2.0 A Samsung charger with my N5 and it has been fine for months and months.
With the Samsung 0.7A charger, battery gets charged in 2:10 hours. I still don't understand it since I came from a low-end Samsung device which could complete its charge in about three hours (and that one had a 1500mAh battery...)
This is a tricky question, no doubt about it.
IMO, the cable quality is way more important than the current output (0.7 A, 0.85 A, etc).
I have a Samsung S4 charger with its cable (it seems very well built and it's thicker than other cables) and my N5 goes from 10% to fully charged in less than 3 hours.
Funny facts - happened to me:
- I had a very cheap cable (probably from China) that came with a battery bank. Surprisingly, it was the fastest way to charge my phone - reached almost 2.0 A. Later I found the trick: this cable doesn't have all the four wires, it only had two (positive and negative, without the data wires). I believe the data wires is used to perform some kind of amperage control; without it, no control was done and led to a very fast (probably dangerous) charging. I don't use this cable anymore, chances are that this nasty cable screwed up my notebook battery
- My N5 is almost two years old. Recently I had a problem with the Power button, the internal contact of the switch on the board was stuck 'pressed' and this led my phone to an endlessly force-reboot. I discovered this behavior after some google search and one of the possible causes of it is exactly the usage of a non-default / faster charger, it said that this could melt something - SOURCE
It makes sense, but I can't confirm this. I was able to fix this by smashing the phone on a table a few times (lol) and I'm still using a non-default charger
Can anyone confirm / say something about these facts?
For those who wants to see the diference between cables and chargers, give this app a try:
Play Store - Ampere
This app is a current meter, I use it on a regular basis and it is pretty reliable - the dev it's a XDA member and this app can be discussed here
Hope this helps!
You can not harm a phone with a 5 volt charger. The phone takes the amps it needs. More is better than less. I use 2 amp, 5 volt ones. As has been said the usb cable is the key thing. The better quality the better charge.
Hello,
I have a weird issue. Let me explain:
Phone: Nexus 6p
Cable: USB Type-C to Type-C google OEM
Charger 1: Original google OEM
Charger 2: CHOETECH Charger (Link)
Charger 3: Vinsic High Speed Quick Car Charger (Link)
Issue is:
Charger 1: Original Charger works great phone battery lasts like 1 and 1/2 days (one day and a half)
Charger 2: Charges well to 100% no big difference from original one but phone battery always last way less (like barely 1 day, not even 1 full day)
Charger 3: Charges well to 100% takes more time then original one and phone battery always last way less (like barely 1 day, not even 1 full day)
All chargers are used with the OEM cable and the results are observed on a period of more then 4 months. At first I thought is the new cable I used but after try with OEM cable same result, I'm not so sure anymore.
Can anyone explain what is going on? What original charger has that 3rd party chargers does not? Anyone have the same issue?
P.S. This is not about any differences in utilization of the phone when charged with 3rd party chargers. I tested this a very long period of time, this really happens.
I don't have an answer for you but I have noticed that different chargers produce different battery life results. Doesn't make since, but there's definitely a difference between chargers.
Well to prove your point : data. Engineers like data. Plot a data map.
But I haven't noticed this effect. The choetech doesn't charge at a "true" 3 amps like the oem, but very very close. Both of those chargers are very good, from my experience.
Okay I am open to any suggestions, what else could be the cause of this happening?
giant22000 said:
I don't have an answer for you but I have noticed that different chargers produce different battery life results. Doesn't make since, but there's definitely a difference between chargers.
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Not that big!
I would say, it is the perception issue and not the real one: it is hard to believe that 100% charge resulted from different chargers would last with any difference in lab conditions. Thus, I speculate, that the issue comes from different (not sure that apparent) actual usage of the phone.
The chargers don't monitor the charge level, the phone does. The phone can't tell the difference between chargers, other than what charging rates they support.
If you were charging a removable battery where the charger controlled the charge level, I could see this happening.
I'll test more and maybe come back with some results!
CHOETECH Charger has QC 2.0 this is the reason phone battery charges but not right way!
Thanks for help!