replaced battery, no longer reporting state of charge correctly
I replaced the battery and Taptic Engine yesterday. I drained the phone till it powered itself off. Then I charged it overnight to 100%. Today it never dropped below 99%. Finally I decided something was wrong so I rebooted. Then it said it was at 55%. Shortly after that it rebooted and it continues to reboot. I pulled the phone apart again and inspected both connectors under a microscope but I don't see any damage or indication they were improperly mated. There are no exposed components near the connector I could have damaged.
Worst part is there wasn't anything wrong with the battery. I needed a new Taptic Engine but I decided if I'm already going through the trouble of opening the phone up I might as well replace the battery too.
Only thing I can think of is a defective battery or I broke something with all the gentle prying required to get the thing open.