Hi , i have a 5c here which  has a charging issue , the battery percentage jumps from say 80 % down to 30% then turns off , i changed the battery ,( tried 2 batteries )  . I have had a good look around the board for missing components around the battery connector , all seems good , i have changed the tristar chip . no change ..  the usb ammeter is showing only .2 amps at the moment although this does change from time to time but never over .8 amps .
I have also let the battery run completely down and charged,  untouched to 100 % to calibrate it ..
the phone has just come off the connect to charger symbol and is booting , started at 24% amp meter is jumping from .15 to .4 ..
any ideas ?
Quote 0 0
Battery percentage jumping around is usually caused by bad active diode / q4 ic. It's next to u2 ic.
Quote 1 0
Thanks for the reply , I had 2 bad batteries , I bought another new battery , and it all seems ok . 
Even though one of the bad batteries seemed to be working ok in another phone . ??
i did have the battery for quite some time though , they must deteriorate . 
It was showing a 0 charge cycle though 
Quote 0 0
A lot of the cheaper poor quality batteries are missing or using poor quality components. There are an array of protection mosfets , fuse, gas gauge etc found in Iphone batteries and if the Iphone can't communicate with the battery properly  then your going to have problems.
The Micro Guys Ltd
TEL    01803 467 477
Quote 1 0

Would you like us to send you notifications about discount codes, news and offers?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.