Chosen Solution
I only have 5 cycles on this battery, but it’s showing a 94% capacity already. Please see attached photo
Your laptop says it is from 2015, and I’m assuming that the laptop wasn’t kept charged from it manufacture date until now. Likely, the battery cells have degraded a bit. You could replace the battery yourself, use the laptop anyway(and change the battery later if you need), or contact Apple if they sold you the device.
This is a brand new battery I fix it just sent me.
