Chosen Solution

i tried ultrasonic cleaning to no avail, is there anywhere i can find to replace or resolder the battery terminal (the part the battery connects to on the mainboard) parts? The phone works only when its plugged in through charge, as soon as i take it out it shuts off, so from what I can say, I believe it’s the terminal. Any suggestions on where to get the chip from?

hi,you can resolder with a solder iron and rosin core solder ,magnifying glass helps.

Hi, I have the same issue after water submersion. Switching batteries does not help. Did resoldering the battery terminal fix the issue?