Does this battery n...
 

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[Closed] Does this battery need changing?

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 cb
Posts: 2859
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2015 macbook pro, battery lasts a couple of hours max now - used to be 8/9 hours. That suggests it needs a new one but is that backed up by the numbers below?

Anyone know how much a new battery would be via offical channels?

Charge Information:
Charge Remaining (mAh): 4125
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 4806
Health Information:
Cycle Count: 827
Condition: Normal
Battery Installed: Yes
Amperage (mA): -1908
Voltage (mV): 12021


 
Posted : 12/01/2021 9:37 pm
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No idea. But my 2015 MBP (13inch) has a 'Full Charge Capacity' of 5775 mAh, which suggests yours is fairly well down on capacity.

Mine has only done 407 cycles though.


 
Posted : 12/01/2021 9:49 pm
Posts: 1299
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My ‘11 air started to last a couple of hours between charges.. the health count etc didn’t look too bad so I ended up using it on power a lot more not bothering to change it. Iirc I was on 800 or so cycles. Eventually the battery swelled overnight and the next morning the MacBook was like a beach ball!

Got an ‘apparently’ oem battery for it and fitted it, amazingly easy and the case just went back to shape and it holds about 4-5 hour charges now, not as good as original but it’s a decade old. So I’d say just change yours.


 
Posted : 12/01/2021 10:41 pm
Posts: 3197
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And be VERY CAREFUL with swollen batteries. Like, outside, NOW!


 
Posted : 13/01/2021 7:22 pm
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Does this battery need changing?
cb
Full Member
2015 macbook pro, battery lasts a couple of hours max now – used to be 8/9 hours.

yes


 
Posted : 13/01/2021 7:28 pm
Posts: 0
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My 2015 MBP battery 100% needs replacing:

Model Information:
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 702
Hardware Revision: 1
Cell Revision: 3244
Charge Information:
Charge Remaining (mAh): 3522
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 5675
Health Information:
Cycle Count: 1157
Condition: Service Recommended
Battery Installed: Yes
Amperage (mA): -1626
Voltage (mV): 11156

It often turns off at anything up to 90% if you ask it to do anything taxing on battery power.


 
Posted : 13/01/2021 7:50 pm

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