Chosen Solution
Hi all I bought a second handed MacBook pro 15" mid 2010 - the battery was renewed just before my purchase. Battery type is TOP A1321, it only has 221 cycles and it has the OS X Battery status “Good”. More info about the battery is here: http://oi66.tinypic.com/2lo3dyb.jpg (using the coconutBattery tool) I am working in the IT industry so I always charged my battery the way it should be (always pulling out charger when fully charged, etc etc..) I’ve checked my Activity and there are no processes with extreme high CPU % usage.. I am using OSX Yosemite (10.10.5) - could that cause the problem? Should I try to downgrade? Stil, my battery is draining fast, very fast - when fully charged I think my battery only lasts for bout 45 min - 1 hour. For a laptop this is far from ideal so I would like to fix it.. Thanks for advices!
Given what you’ve tested I would say the battery is very suspect! You should be getting around 8 hrs of simple Web browsing at best, heaver graphics will lower this. I get around 5 hrs on my laptop doing VPN connections which are more compute intensive. Here’s a few Apple T/N’s that might help lengthen the run time: About Mac notebook batteriesBatteries & Power As additional reference: EveryMac - Unibody MacBook Pro Q&A. If you still can’t get more out of this system I would recommend you get a replacement battery (a better quality one) as the start point.
I would say 45min to 1hours for a 2010 Mbp is average. Yosemite and safari will be your best allies for Battery saving. El Capitan and Google chrome will literally suck your life dry. Swapping the battery with an aftermarket brand can cause this problem too. If it is aftermarket go with Anker, they make the batteries for macbook pros.
2 possibilities here:
- your battery is dead, pretending to be charged at 100% but it’s wrong.
- something is draining the battery power, and is forcibly producing heat (CPU, GPU, failing component, …). Are the fans spinning at high speed? If yes, something is intensively using the CPU or GPU. If not, can you locate the area of the mbp that is getting hot? Opening its case would help, but take care not to make any shortcut.
