MacBook Pro 17" Unibody

Model A1297 Unibody: Early 2009, Mid 2009, Mid 2010 & Late 2011

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Is the battery that smart?

Here is the info on the battery

Battery Information:

Charge Information:

Charge remaining (mAh): 1176

Fully charged: No

Charging: No

Full charge capacity (mAh): 9940

Health Information:

Cycle count: 1060

Condition: Replace Soon

Battery Installed: Yes

Amperage (mA): -4614

Voltage (mV): 6910

Coconutbattery said i have 9875 mah left now, but this goes down quick

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by Phillip Takahashi

is the chip in the battery that accurate most of the time

by Nick

Depends on which parameter. The cycle counter I imagine wouldnt be far off. Full charge capacity is likely "programmed" in. The amperage and voltage I imagine is right, it's an uncertainty of just +/-.1 A and +/-.1 V...same as a low-end multimeter. Condition is likely based on cycle count? I would think that the numbers are fairly trust worthy.

by Phillip Takahashi

at this point i have to see if it runs well i guess to be sure

by Nick

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Chosen Solution

Nick, I've never seen a battery with this many cycles. It only has about 12% of original capacity. Does it last 10 minutes? Time to change batteries. If you used something besides Coconut battery to get your stats you might try that.

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system profiler was off big time, i have 9940mAh left

by Nick

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Nick will be eternally grateful.

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