A1297 takes 9 hours to charge to 100%

it-solve

Member
Hi Guys,
An interesting case here. A1297 takes about 9 hours to charge the new battery completely.
The previous battery which was replaced (less than 6 months ago) also had a similar issue where it took longer to charge. Then suddenly stop charging and drained to 0%.

With the replaced battery still similar slow charging issues.
Genuine 85W Charger, "Genuine"ish battery

iStats shows only 411mA charging current.

20211206_142313.jpg

Looking at DC-IN sensors seems to be pulling consistently 2-3.5A (adapter is capable of 4.6A and is getting noticeably hot)
20211206_143435.jpg
 
Last edited:

2informaticos

Administrator
Staff member
" "Genuine"ish battery "
What this means, is or not original Apple battery?
If not and old one also fake, that could be the problem.

Change Q7155, just in case.
Check exact resistance between pins 17/18 and 27/28 of U7000.
Also test disconnecting BIL (J6955).
 
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