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MBP 2009 replacedbattery says "cycle count 32768" and does not work

Mr.Bullitt

Mr.Bullitt

macrumors regular
Original poster
May 15, 2009
173
2
Hi guys.

I just replaced my ageing MBP 2009 17" battery and first it seems to work just well.

It is a 3rd party A1309 / A1297 type.

Replacement was easy with the iFixit guide.

The side power tester showed 4 dots.

Booted. All good. Systems said 72% charge.

Cycle Count: 1
Health 100%
Condition: Normal
Design Capacity: 13598 mAh
Full Charge Capacity: 32768 mAH
Manufacture Date: 16-jan-2017
Voltage 7883 mV
Amperage -6388 mA

Pluged the power adaptor in and let it charge for ~ 1,5 hours.

- Then I remembered something about resetting the SMC. Which I found the guide to online and did.


Now after resetting SMC, it says:

Cycle Count: 32768(!!!)
Heatlh: 100%
Condition: Normal
Design Capacity: 0 mAh
Full Charge Capacity: 32768 mAH
Manufacture Date: 30-nov-1979
Voltage 32768 mV
Amperage 0 mA

- I also tried to reset PRAM. No change.


The side power tester shows a single blinking dot.

- MBP is unable to power on now, without the power adapter. This is after the reset SMC. It is not possible to drain the batteri this quick.


How did this just happen???? :-( - and can it be fixed????
 
32768 is the maximum value for a 16-bit signed integer (actually, it's -32768) so I'm guessing something went really wrong.
 
I was thinking something like that - it is a very family integer. So somehow the SMC reset went wrong - now is there are way to re-reset this?
 
reinstall the old battery, reset the SMC, PRAM by attempting a regular, safe boot, or recovery boot (you won't know until you use the old battery). Once you have it working swap batteries and leave the SMC alone.
 
one1 said:
reinstall the old battery, reset the SMC, PRAM by attempting a regular, safe boot, or recovery boot (you won't know until you use the old battery). Once you have it working swap batteries and leave the SMC alone.
Click to expand...

I do not have the old battery. Once I saw the new one working, I handed it in for recycling.
 
If you don't have the old battery, don't worry about it.

Try disconnecting and re-connecting the battery.

Does that get it working, charging, etc.?

If so, I'd leave things at that, and just use it.
 
Fishrrman said:
If you don't have the old battery, don't worry about it.

Try disconnecting and re-connecting the battery.

Does that get it working, charging, etc.?

If so, I'd leave things at that, and just use it.
Click to expand...

- between disconnecting and re-connecting the battery - do I boot the mac - reset SMC/PRAM, before re-connecting it again? ( e.g like to trigger/force a change in the condition)
 
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