Not for security
Battery level as security?
No.
e.g.
Charge low so I slot in my fully charged spare battery into same phone.
Charge low on main phone so I turn on my fully charged backup phone & log into account with that.
Disclosure: Not a uber user, so no idea what other data they record, but swapping to spare phone could involve SIM swap over if they also record phone number details.
Both normal behaviors and false flagging as security issue would not please me if I was a customer.
Biting the hand that feeds IT
