Comet A8205 - Spare Li-Ion Battery w/Lid
The spare part is intended exclusively for data loggers: U0110M, U0141M, U3120M, U3121M, U3631M, U4440M, U0843M, U6841M, U7844M, U3430, U4440.
The battery can only be replaced by the manufacturer or an authorized service center.