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Veröffentlicht am 24. Oktober 2011 / 2,2, 2,4, oder 2,5 GHz Quad-Core Intel Core i7 Prozessor

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short battery run time

On my 3rd replacement battery. Have followed all the calibration guidelines, but initial battery run-time was only 2 hours. Is this normal for a new replacement ? Is there something I can do to increase the run time ? Thanks for your attention. This is the CocoBatt view after first discharge phase of calibration of new battery

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The is CocoBatt after discharge and full re-charge. Took 2 1/2 hours to full discharge.

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Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Bilder zu einer vorhandenen Frage hinzufügen


mind telling us why did you change your battery 3 times?



see pix of early calibration phase of NEW REPLACEMENT BATTERY.



First battery began to swell and press up against track pad, causing erratic trackpad behavior. Second battery retained charge for only about 1 1/2 hours and would only charge up to about 50% of design capacity. Both had been thru calibration sequence.


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Well its clear the battery its self is good and healthy. I’m suspecting you have a bad charger (likely a knockoff) and/or the charging logic within the main logic board is bad. I’m suspecting the charging comparator logic is messed up.

Make sure you only use a REAL Apple charger Apple 85W MagSafe Power Adapter (for 15- and 17-inch MacBook Pro) as many of the knockoff chargers can damage your system!

It is very difficult to tell the real from the fake! And the Amazon/eBay sellers will tell you what you want to hear to trick you! Only buy directly from Apple or an authorized reseller and only within the original Apple packaging.

One of my clients years ago ended up paying well over 2 Million for a fake charger! As it started a fire in a hotel, thankfully one one was killed. And only because the employee forgot his charger and just found a local store selling Apple stuff not knowing the risk.

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Thanks for your answer, Dan. The CocoBatt info is from the new battery with a replacement charger. The earlier defective batteries were paired with an original Apple magsafe charger which worked until just before the last battery died. (The pins in the magsafe connector didn't make reliable connections, so charging was erratic at best.) My questions were 1) whether a 2 hour run-time on a NEW battery was normal, and 2) if there was something else I could do to maximize battery time.


@stevesamrob - The replacement charger is a Knockoff then which likely damaged the charging comparator logic.

Think it like this your gas gage is messing up! is the tank really full or not, unlike the case station filling is controlled the control is based on the gage so it might think its full but its not! Thats not the fuels issue (battery here) its the gage messing up (the comparator logic)

Your logic board needs repair to fix things! This is not a battery issue and there is nothing you can do externally to alter things.


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stevesamrob wird auf ewig dankbar sein.

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