Average Reviews:
(More customer reviews)When I first plugged in the battery, the system profiler said it had 6200 mAH which was what I had expected as it's supposed to be an extended capacity battery. Naturally, I followed Apple's calibration guidelines, charged it up and kept it charged for two hours, then drained it down, keeping it down for five hours and then charge it back up again. Well, when the MacBook Pro is on this battery's power, it discharges at a rate between 4,000 and 5,000 mA while when it's on the original battery, it discharged at a rate of approximately 3,000 mA so this battery discharges much faster than expected. Also when the original battery is depleted, there's enough reserve power for the MacBook to enter deep sleep mode where it's state is saved onto the hard drive so that when I swap out the battery or get it onto wall power, it will come back up to the same state it was in when it went down but with this battery, it just dies without a chance to enter deep sleep mode. Also after the Apple calibration procedure, it no longer had 6200 mAH, rather it had 5988 mAH. OK, the Apple procedure is not the most thorough calibration procedure so for the next charge, I placed it on a commercial Lithium Ion battery conditioner designed for the MacBook Pro, now it has a maximum capacity of 5688 mAH. If it continues to loose capacity at this rate, it won't last more than a few months.
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Product Description:
Great Value - higher capacity and lower pricetrue fit and finish, superior quality with 1 year warrantylonger run times with up to 68% more capacityintegrated built-in safety circuitnewly redesigned circuitnot compatible with MacBook Pro late 2008 and later models
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