Asus Zenfone 2 ZE551ML iFixit replacement battery never fully charges

Has anyone tried replacing their ZE551ML battery this year with iFixit’s replacement battery?

Their calibration process suggests draining to less than 10% and then charging to 100%, but my battery never reaches 100% even after days of charging. Original charger and USB cable test fine, and the battery does charge, but it stops charging at some varying percent (usually like 85%). I’ve never seen this on any other phone battery.

I’ve tried 3 replacements already, all have the same issue. The iFixit battery replacement warranty is amazingly easy and helpful! I’d rather just have a battery like the original that lasted 5 years with no issues.

Any thoughts?