Sealed in batteries on smartphones and Surface tablets.
The device will eventually reach a point where it won’t even boot (or shuts down randomly) when plugged in because the charger connection isn’t actually wired to power the main board without going through the battery first (most smartphones) or the device consumes more power than the port is designed to deliver (Surface).
I’ve been successful in replacing built-in batteries in 2 different phones. Granted my families phones are all > 4 years old so maybe it’s gotten much harder lately.
Sealed in batteries on smartphones and Surface tablets.
The device will eventually reach a point where it won’t even boot (or shuts down randomly) when plugged in because the charger connection isn’t actually wired to power the main board without going through the battery first (most smartphones) or the device consumes more power than the port is designed to deliver (Surface).
I’ve been successful in replacing built-in batteries in 2 different phones. Granted my families phones are all > 4 years old so maybe it’s gotten much harder lately.