Chosen Solution
See info from Coconut:
Have run through all methods to recalibrate battery from Apple Support and from this wiki. Still losing power fast. Lasts less than two hours off power cord. Looks like others have had similar problems and not been adequately answered. Help? Update (07/18/2020) Hi all, thanks for your very helpful answers. iFixit says the battery is out of warranty and “the system” will not permit replacement. However I was offered $50 off the purchase of a new one of the same type. Here is the Coconut Battery cycle graph:
Looks to me like it was defective from the beginning. Oh well. Guess I should limit future purchases (if any) to non-consumable parts. Again, acknowledge it was more than a year old. Not impressed though.
@gct2 … thank you for your purchase and in supporting the right to repair community. the battery should be lasting 6-7 hours on normal rated usage (wireless web browsing) anything other than this will deplete the battery faster of course. (the more you use it, the more you charge, the more you charge the life span shortens) your symptom of the decreasing usage time is indicative of a damaged (dry) cell in the battery. no re calibration will help as it is simply one (or more) cells not charging to give power to the device unplugged. im not sure about the check battery as apple has placed an update to advice about the battery with the last updates if not genuine apple product. (even if it is, if its not serviced and cleared by apple at the time of repair, it will flag) this being said, if its not working the way it was when you installed it, id replace it again and chalk it up to the way the device is ran and charged. heres a link to the battery for your listed device if needed: MacBook Pro 13" Unibody (Mid 2009-Mid 2012) Battery if you feel that something is off and you would like to speak with someone about the technical details and rated longevity of the battery, you can reach out to the service team here: https://help.ifixit.com/article/50-warra…. the link above has many sections about the warranty descriptions, making a claim and much more. your purchase comes with a one year warranty, so that has expired…but feel free to reach out there and see what can be done, if anything.
