Do I have a bad battery?
So recently, I purchased an Early 2011 Macbook Pro 13" off of a friend because he got an upgrade for his birthday. Laptop works fine, and I love it, especially after using an old Windows 10 laptop for multiple years. Despite being old, the things feels snappy. I have had one issue though, the battery.
I know how to replace the battery and am not looking for assistance in that area, but I think I have an issue with the battery? My friend said it worked fine for him, but I can barely make it through an entire day on this thing. The battery only has 92 charge cycles on it, and both the System Diagnostics and a 3rd party application called Coconut Battery say it is in good health, still supporting 100% capacity. The laptop is rated for 10 hours of usage, but after 55 minutes (1 class period), with the brightness a little under halfway (like 1 or 2 notches), the keyboard lighting off, and only editing documents, scrolling the web, or watching YouTube, I am at 70-75%. I don't think this battery is in fully working condition and was wondering if anyone has some expertise in this area.
Thank you anyone for help!
(The photos attached are the diagnostics and a picture of the actual battery)