Solved Ifixit Battery Replacement Works Until 25 Battery Life Macbook Pro 15 Retina Display Mid 2012
Chosen Solution Replacing the battery was no small task but went well. I followed the directions of letting the battery discharge, then charge to 100% then discharge and charge to 100% again, then continue with normal use. However, that normal use will get me to 25% remaining life and then the laptop will shut itself down. I have reset both the SMC and the NVRAM. Laptop seems to function fine other than that....