Why does my android phone stop charging?

Question

Android

The question is the following: there is a phone on android, at a certain point it stops working adequately. Having analyzed the situation in detail, I get this:
- It is charged only by 17%.
- Charging goes only when the phone is turned off (and charges no more than 17%).
- When the phone is turned on and hanging on the charge - it says that 17%, you just need to pull out the cord, as it says that 1% is left and it cuts off.
I tried to sew, do wipes as much as possible. There is no sense. The situation is similar with the other cord. There is no possibility to test another battery.
Has anyone encountered something similar? Can someone tell me which way to dig? Thanks in advance.

Answer 1

Check battery voltage.
Try manually charging the battery a bit (voltage regulated power supply, current limit - no more than half an amp to start with).
Maybe with a pusher the battery will come to life. If it charges normally from the source, but not in the phone, then either the charge controller in the battery is faulty, or the charging circuit in the phone itself is faulty.
If the phone is faulty and there is no way to fix it, then you can charge the battery in a separate device.

Answer 2

It is worth checking the battery - usually a poorly performing battery has smudges or signs of deformation.
If the battery is damaged, I recommend that you immediately stop using it. If she slams, the phone may no longer work.
Good luck!

Answer 3

It was like that, the plus on the microUSB connector fell off, soldering solved the problem

Answer 4

Had a very similar problem.
Replacing the microUSB connector solved the problem.