13" uMBP New Battery turns off at 19%?

iamMacPerson

iamMacPerson

macrumors 68040
I bought a new battery for a MacBook Pro in my fleet and replaced it today. The battery came from iFixIt who I trust and was told it was official.

I get it today, everything seemed fine and the computer was reading it fine. I got it down to about 19% when all of a sudden it just died. I plugged it in and it came back to life, however the battery indicator read 0% instead of 19% and CoconutBattery was reporting a 75% battery life (versus 96.5% when I first installed it).

I tried an SMC and PRAM reset and the only thing that did was screw up Trim Enabler so now I'll have to restore my Time Machine backup. Anyone have any ideas what to try or should I just send it back to iFixIt?
 
iamMacPerson said:
I bought a new battery for a MacBook Pro in my fleet and replaced it today. The battery came from iFixIt who I trust and was told it was official.

I get it today, everything seemed fine and the computer was reading it fine. I got it down to about 19% when all of a sudden it just died. I plugged it in and it came back to life, however the battery indicator read 0% instead of 19% and CoconutBattery was reporting a 75% battery life (versus 96.5% when I first installed it).

I tried an SMC and PRAM reset and the only thing that did was screw up Trim Enabler so now I'll have to restore my Time Machine backup. Anyone have any ideas what to try or should I just send it back to iFixIt?
Click to expand...

Is this a Unibody MBP? I'm guessing yes with the uMBP?
 
iamMacPerson said:
I bought a new battery for a MacBook Pro in my fleet and replaced it today. The battery came from iFixIt who I trust and was told it was official.

I get it today, everything seemed fine and the computer was reading it fine. I got it down to about 19% when all of a sudden it just died. I plugged it in and it came back to life, however the battery indicator read 0% instead of 19% and CoconutBattery was reporting a 75% battery life (versus 96.5% when I first installed it).

I tried an SMC and PRAM reset and the only thing that did was screw up Trim Enabler so now I'll have to restore my Time Machine backup. Anyone have any ideas what to try or should I just send it back to iFixIt?
Click to expand...

Based on what you are saying, it's absolutely a bad battery...no doubt about it...we've seen this many times
 
It looks like you got either a, used up, used battery, or a defective new one. Coconut should have reported 100% battery life when the battery was first installed. When you did the calibration, 19% became 0%, and the 96% reading was corrected by about 19% to the approx 75% actual life, as reported by CoconutBattery.
 
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