"Richard Riley" wrote

It was semi-after market. It was labeled as an original, factory
battery from the same company that made the phone, but I bought it
from a cart in a mall, so it could have been counterfeit.

Or a second. Those Li Po Ion batteries are real particular about how they
get their electrons stuffed back into them. It is my understanding that
even normal ones go "bang" once in a while.
--
Jim in NC