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Apple A1618 battery, Chip BQ20Z45 laptop battery icon show 'service''

zoid911
(@zoid-chan)
Trusted Member

when battery install on macbook,battery icon on screen show 'service'

cells looks good, FCC is higher than design capacity, what can be done, 

thank you

 

This topic was modified 4 months ago by loliconic
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Topic starter Posted : 03/02/2026 3:33 am
loliconic
(@loliconic)
Member Moderator

@zoid-chan 

This problem may be caused by the serial number.
You can try searching for it in the EEPROM and then change it.
I think this chip uses Big Endianess.

This post was modified 4 months ago by loliconic
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Posted : 03/02/2026 10:40 am
zoid911
(@zoid-chan)
Trusted Member

@loliconic currently i dont have Reset license , once I am more familiar with the NLBA capabilities, I might want to try,hopeful I can get a 7 day trial period where I can experiment with it and ask my employer to get a year subcription.Thanks you.

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Topic starter Posted : 03/02/2026 11:16 am
loliconic liked
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