Battery issues on a brand new OnePlus 13r
Bought a new OnePlus 13R (8 days ago) and within a few days, the battery percentage got stuck at exactly 51% for nearly 10 hours despite normal usage. Eventually the phone suddenly shut down completely.
The next day, the device started showing:
“This battery may not be genuine and could pose a safety risk. Please visit the service center” and at times the the System UI notification showed "Battery Connection Problem, please visit the service center".
After that, the phone would not charge beyond 51%, and every time I plugged it in, the same “battery not genuine” warning appeared.
Took it to the official OnePlus service center. They factory reset the phone, after which it started charging normally again and they found no fault in it.
Can you tell me what could have happened?