Chosen Solution
The Original Battery in my Iphone SE has had the health change from 87% to service after replacing the screen. It is also charging but continually reboots and isnt getting past 3% charge. Any ideas on a fix or why this is occurring?
You probably pried against the board when disconnecting the battery, destroying tiny components that are responsible for battery IC communication, therefore battery information cannot be read and iOS devices perform a safety shutdown after several read timeouts. NEVER PRY, ALWAWS LIFT.