I have an old CUBOT P20 "chinaphone" with Android 8.0 that I want to use as an IP camera and I need it to stay always on.
I have removed the battery and attached the usb power supply directly to the battery terminals and it works fine.
But to my surprise when I turn on the phone, the battery percentage begins to drop and when it reaches zero it shuts down like it does when the battery get low.
How could it be possible? there is NO battery, it's just my usb power supply connected at the battery terminals!
The power supply has plenty of amps (it's not a charger) and it seems that Android has a built in "countdown" that starts regardless of the battery capacity and shuts the phone off.
If I disconnect and reconnect the power supply and then turn on the phone the percentage of the "battery" starts again from 100% and then begins to drop. This is extremely annoying because I need to leave the phone always on without interruptions.
Is there a way to disable this android function?
Related
Any way to have the Touch Pro operate on external power only when plugged in, leaving the battery alone if I have it set to not charge when connected to a computer?
Sometimes I hook my phone up and turn off the charging feature because I don't need it to be charging. It would be nice if it would run off the external source in those instances so that the battery does not continue to drain while the screen is active or I'm messing with the phone.
you might be able to pull the battery out.... but i don't know why you wouldn't just set it to charge? Its not going to kill your battery to do so and you will have more power later.
So, I accidentally let my phone run down to zero battery. Now it won't turn on, even when plugged in. It used to show the empty battery icon, but now shows nothing, not even that icon, or even the LED.
Anyone have any ideas, or places to point me out to.
I'm gonna leave it charging overnight.
So, leaving it charging overnight seemed to do the trick.
jhtfarquhar said:
So, leaving it charging overnight seemed to do the trick.
Click to expand...
Click to collapse
So, i did it from this link
-------------------------------------------------
Use the electrical outlet charger (not usb pc or notebook), connect the device and hold the power button until start. (may take up to 2 minutes)
After the LED next to the front camera light up, release the Power button immediately.
The LED lights up for some time (in my case, more than 30 seconds) and may blink, then turns off and the phone will light up the loading screen with the battery indicator at 0% (zero percent), and turns off again.
Pressing the power button again, just once, without keeping it pressed, the phone will not turn on, will remain off (not rule because he can light with the target load, it depends on the charge status of the battery). But do not worry, leave loading for a few minutes without stopping and soon the phone will light up indicating more or less a 5% (five percent) of battery charging.
Now most importantly, do not connect or disconnect the phone from the charger until you complete 100% (one hundred percent) of the battery charge. This undoubtedly is the crucial and most important point of this walkthrough. I repeat: do not remove the charger or plug in your cell before reaching 100% (one hundred percent).
--------------------------------------------------
All credits to pedro henrique by his walkthrough.
it happened with me too...
Just put ur phn in recovery mode...by pressing up vol+power button and then dont use wall charger...at this time it wont get charge from there.
use usb ..charge from ur laptop or pc..after 10 -15 min..boot your phn and then u can use wall charger,
I entered a swimming pool with my OPO in my pocket. I immediately went and bought some rice. I wasn't able to open the back completely because I didn't have the tools to remove the SIM tray.
After a few days, I tried booting it and it showed a message that the battery was too low (pic) and then it would keep rebooting itself.
I thought that the battery was messed up, so I replaced it. Now it turns out that everything works perfectly fine (screen, speakers, camera), but the new battery (and maybe even the old one) does not seem to be charging. What's even more weird is that it will only show me that it is charged 50%.
The phone seems to recognize that it is connected to a power outlet. When turned off, I can click the Power-button once and see that it is "charging" and at 50%. When turned on, it does not appear anywhere that it is charging. No notification light, nothing on the status bar, and "50% - Not charging" in Settings>Battery (when plugged in) and "50% - approx. 12 hours" (when not plugged in). Also, in Settings>Battery>Battery optimization it says that "battery optimization not available" for Google Play Services.
I have obviously plugged the battery connector back in when I replaced the battery, but I don't know if I need to replace the Micro USB Port or not. It seems like it is recognizing when it is plugged in, but it's simply not charging.
What do you think I should do? Thank you!
Phone is off, plugged in to charger, battery is out - and when I click on the power-button it still tells me that it's charging and on 50%!?
I CAN NOT charge my smartphone Charge only off or
Bootloader is the way it recognizes correctly when connecting and disconnecting the usb cable
Android System Started
On with the USB Cable: Indicates the battery icon as charging but in the state of the phone "indicates you are not ****ting", so disconnect and disconnect the cable does not recognize
On without the USB Cable: Does not recognize anything, neither connect nor disconnect
Loading with the Off: load very slow; By moment turns on and off the screen and shows the logo and then the percentage of battery
same problem but solved finally
Switch off your phone/ let the battery drained to null(recommended)
Try to start your phone at 0% to drain battery.
Screen will show 0% or plug icon.
Then connect charger then , then switch on plug of charger.
After few minutes screen will show battery at 3%.
Let it charged without disturbing, it may take more time.
In my case it take 1-2 days to fully charged.
After fully charged, notification light will show on speaker, then disconnect charger and turn your phone on.
Hope this will solve your problem.
If not repeat same procedure.
***Never turn your phone on/restart while charging it may create the same problem***
If the problem not solved, uninstall or disable "charging related noise problem" system app.
Problem solved
After trying to solve the problem by placing different ROMs and until flashing the Firmware the solution was the following
As the only way to properly load the phone was by bootloader mode; Leave charging the phone that way about 5 hours lego ignited the equipment even charging and that way began normal operation the equipment
Phone is Moto X 1st gen that had the original battery and was slowly dying so I bought a replacement off Amazon and swapped it out. Now it doesn't recognize any charge level to the device. I've tried a couple of those battery recalibration apps off the App Store but no luck with that (though one of them tested the battery integrity and confirmed it's not a dud). When I swapped out the old battery it was at like 18% or something so upon putting the new one in and rebooting it stuck with that 18%. I read that you could retrain it by letting it drain completely then charging full so that's what I tried next, now it reads zero.
Here's the behavior I see:
Power off device, plugged in to charger. If you push power button it will display a battery icon with a question mark in the middle
Hold down power button in this state and it still doesn't start up but the battery icon switches to the standard lightning bolt 'charging' icon but reads 0%. This number doesn't change.
Hold down power button again and it boots successfully but battery meter reads 0% - charging (actually one of the recalibrate apps I ran set it to 4% so now it says that)
How do I fix this?