Moderator edit: Subject updated for clarity and findability.
Nest Cam can't be charged, or it takes too long to charge, usually more than 11 hours, it is also recommended that you use a compatible cable and adapter for the fastest charging.
If Nest Cam’s battery is empty, you can’t turn it off, charge it for several minutes, then mount it back, turn it off.
Charge again for several minutes, if it takes too long, usually more than 11 hours, it is also recommended that you use a compatible cable and adapter for the fastest charging, unplug it, and charge again. Usually it takes about four hours to charge.
