Chosen Solution
I recently picked up a 2009 MacBook Pro 15”. El Capitan is telling me to replace the battery now. Although the battery is at 100 percent and only has 257 cycles on it. Is it really a battery issue for why the MacBook is shutting down after a few seconds (sometimes minutes) without it plugged in? Or is it something else? I also gave a third party application saying that the battery has about 4 minutes left(and going up for some reason), 10.8 years old, the original max is 6500 mAH, the current max is 65035 mAH, and the current charge is 65035 mAH. This app has never done this for me, so I’m not sure what’s wrong.
Let’s try a different Battery App. Please download, run and post your results using Coconut Battery https://coconut-flavour.com/coconutbatte… UPDATE 4/26/20 Something is very wrong with what this battery is reporting. Although it does have a low cycle count, it is 11 years old (a long time for a laptop battery). I’d go ahead and replace it and hope there is nothing else wrong with the machine. MacBook Pro 15" Unibody Mid 2009 Battery Replacement
