Develop Bugs

Battery Charged but device doesn't power :'(

Hey guys,
i have a Vodafone VPx now and all has been great, however yesterday it reckoned the battery charged from 8% to 100% in 10 mins, i left it on the cradle over night, and now the device doesn't show any signs of life apart from a red charging indicator. I took the battery out and metered it, shows up at 3.72 Volts, so battery holds charge. What can i do to get the device to power again?
T.I.A
RJ

I'm not an expert but I would suggest to leave the device in the cradle and try to boot it when charging it. In this way you can decide whether it's a battery or some other malfunction. Maybe the internal backup battery needs to be replaced, but I don't know if it would let the battery indicator LED to blink...
I replaced my battery because it showed that it's fully charged but when uncradled the device won't connect to bluetooth devices or regularly drops the connection, it even resets itself although the indicator displaying full charge. Now everything is OK. You may consider buying a new battery if it's older than 2-3 years, but first test if that causes this behavior.

hi,
actually i'm experiencing the same thing..
my BA if used to connect to wifi, not more than 5 minutes it will hang with the screen goes blank.. so is it because of my internal back up battery that needs to be replaced or my main battery that need to be replaced?
FYI, backdays before, i got notification that my internal battery runs dry..

Ive just bought a BA off ebay and it came with 2 batts, but 1 of the batts keeps causing the BA to turn off evern if the batt is fully charged.. odd hey?

speedy2009, I think that one was the original battery bundled because it has no value any more so the seller sent it with the machine, all in all it's not a bad device for it's years.
jilaxzone, don't know how to test this, because sometimes the device gives false alarms, I would take it to a PDA shop and let them replace the internal battery as this is cheaper than the main battery.

Also Ive figgered out that if the backup battery is low, it gets charged up from the main battery.
Should everything be lost from the memory once the backup battery runs out? Cos I did try this morning, taking the main batt out and left the phone for about a hr. When I put the batt in, even tho windows said the backup batt was completely empty, it still had all my info in windows??

Hi, the backup battery is responsible for the time and date. The other functions of it are unknown to me. Fortunately the ROM storage is not lost when the battery drains completely

misi2096 said:
Hi, the backup battery is responsible for the time and date. The other functions of it are unknown to me. Fortunately the ROM storage is not lost when the battery drains completely
Click to expand...
Click to collapse
If thats the case theres no real reason for a backup batt cos it only takes a few secs to alter time and date, like on a normal mobile phone.

[Q] Battery not fully charging problem

I have a battery / charging problem on my Gnex. The problem is that the battery won’t charge more then 60 %, drains quick and then the phone shuts down at 0 % ( in about 2-3hrs of use) and wont restart until recharged.
At first, I tought it was the battery so I bought one OEM on ebay. It did the same thing so I returned it and went to Telus store to buy an OEM.
Same thing happened with the new OEM. I then bought an external wall battery charger and charged the 2 batteries I have. When I put the first one back in the phone it said 12%?
I tried the second one which is the new OEM and same thing, its showing 12%.
I did a little test, I had 4.2.2 so I unlocked the phone and rooted (no more warranty anyway) I flashed back the ROM to ICS. No change.
So what I did next is I used the phone until it shut down at 0% and restarted it on the bootloader screen and left it on, on the bootlooader screen.
Well the phone screen stayed on for more then 3 hours, so I know the battery is good because there is no way that a 0% battery could power the screen for 3 hours.
So after it shut down from the bootloader screen, I charged it again, in the phone, and it went right back to 60%, I did try to wipe batt stats from recovery mode and battery calibration apps but no luck.
Is there a way to disable the auto shut down on the phone? The battery meter if definitely showing wrong charge stats. Is the battery controller part of the USB board or the motherboard?
The only thing I did not try yet is a custom ROM and Kernel.
Any ideas?

Sounds like a hardware failure... It's obviously not the batteries
Sent from my Galaxy Nexus using xda app-developers app

I found where the Power Management with Switch Mode Charger chip is, on the motherboard! I wonder if there is some ways to access and modify the values of this.

jackpot554 said:
I have a battery / charging problem on my Gnex. The problem is that the battery won’t charge more then 60 %, drains quick and then the phone shuts down at 0 % ( in about 2-3hrs of use) and wont restart until recharged.
At first, I tought it was the battery so I bought one OEM on ebay. It did the same thing so I returned it and went to Telus store to buy an OEM.
Same thing happened with the new OEM.
Click to expand...
Click to collapse
For what it's worth, the same thing is happening to me. Charges to 64%, and it acts like it's only got a 64% charge - runs out fast. And I also tried a replacement OEM battery with no difference. I'm not completely convinced this is a hardware problem - though I guess it could be. I'm still stock Gnex (with the 4.3 upgrade - and come to think of it, this started some time after that upgrade). I was hoping it was some kind of kernel problem that i could fix by switching to CM. Anybody have any luck with that?

The same thing is happening to my phone, although I'm lucky enough to have it charge to 73%. Only realized the problem when I bought a new OEM battery and it stopped charging at the same 73%. I have a friend who has the exact same phone and will give her both my batteries to charge and see the results (with her phone then once batteries are reinstalled in my phone).
Outside of replacing the motherboard, would anyone know if there could possibly be a software fix? Has this happened to any other phone? If so does anyone know the results?
Thanks,
Stefan

My gt s6312 has charging issue. It never charge over 67-69% in my phone. I checked the battery in other phone its ok.....please help.....
Sent from my GT-S6312 using XDA Premium 4 mobile app

Sounds like a hardware failure in the phones' charging circuit. Since:
- no software change (ROM or Kernel) fixes it
- no battery change fixes it
Then it's obviously the charging circuit in the phone. Time to get a new phone!

Well I've confirmed for myself that it is my phone charging circuit that's giving me bad info on my battery charge. I installed both my batteries in a friends Gnex and both gave me 100% charge reading on my friends phone. I then re-installed both batteries in my phone and both came back with identical 13% charge reading. So to me this is obviously not a battery issue.
Since my previous post in July my phone has gotten progressively worst. So I have now come to the point where I either have to replace the phone's charging circuit or replace the phone all together. I would much rather do the first as any replacement phone via my carrier would require me to pay more monthly on my contract.
So would anyone know with certainty where the charging circuit is located in the Gnex? Is it on the main logic board or the USB charging board?
Thanks

Battery (with multimeter) full but android show 4%

Hello gius . I have a strange problem. The tablet's friend have a poor battery ..drain quickly. So i bought new One. I received it and the colour on flat are not the same of original bit the series model is the same so i put on the tablet. I turn on and battery was 54%. Ok
When my friend charge to 100% (when tablet off) take off charger and turn on...ok 99%. When try to power on again...nothing to do.
I try myself...and i put again the usb with power supply Samsung 2amp. The battery is 4%.
I try to charge for several hours but still on 4%.
Change usb . Supply....same problem. I try to turn on the tablet..i saw charging in screen but after time no charge animore.
So i cheked with multimeter...the battery ia very full!!!
Same problem with old battery now. Seems some problem on the log of the android battery

Tablet not charging even after battery replacement

Hello,
The battery of my nexus was slowly dying. After not using it for some time the battery did not recharge anymore at all. After I replaced the battery I could start the tablet again. (It got stuck during start up in the Google boot screen but this might be a different issue.) This Weekend I planned to flash a new OS to solve the boot issue. But again the tablet wasn't starting at all. I connected a charger for a whole day but nothing changed. So basically I have the same situation now as with the old battery.
Do you have any idea? To me it seems that not the battery is the problem anymore but something with the charging. The replacement battery was probably charged when it arrived and once it was empty I could not recharge it.

Battery always showing 0% and shutting down when unplugged!

One fine morning my Note 10.1 2014 battery started showing as 0% and will not 'charge' (i.e., percentage will not rise). As a result, the tablet has to stay plugged-in always to use it (just like a desktop computer). The moment it is unplugged, it shuts down in 1 or 2 seconds. Tried different chargers/cables/flex cables/new battery/uninstalling/reinstalling/warming...& what not. But nothing solves the issue. I came to know that the battery is actually holding/taking in charge which is evident from the fact that the tablet runs without being plugged-in in the recovery/TWRP mode! It seems just that the android OS is not recognizing the charging. Any help would be appreciated. Thank you!

Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.

blackhawk said:
Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.
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Click to collapse
It is not the battery, I am pretty sure! As for the other possible causes suggested, it seems Samsung considers the product too 'old' now to look into/offer any service/parts replacement. Anyway, thanks for the quick reply!

I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.

tom.cruiser said:
I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.
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Please do post, if you find a solution!

I strongly doubt that LOS14.1 (lineage-14.1-20210320-UNOFFICIAL-lt03lte) is the culprit as my old P605 still works with the unchanged battery.
Once charged it lasts for quite some days (usage 0.5h/day) without problems.
It's always in flight mode and mostly WLAN is shut off.

It's not that cuz of an OS it's the old battery problem....
Same thing happens to one of my cellhphones.
I charrge it to 100 % while it's turned OFF then tomorrow I turned it on and battery is at 1 %, 0 % and shuts off.
It's just old Li-Ion battery which needs replacement.

After having replaced the battery with a new one with about 50% charge the discharged P605 would only recharge to the level of the original charge. It returned to normal behaviour after charging once with the original 5v/2A charger and the original cable with the second GND contact missing. If the latter did the trick, with most cables u can't tell whether the contact is wired to GND or not.
But in the days of miniUSB, the second GND was sometimes used to put the device in charge or pc connection mode, by swapping cables.