While undercooling and overheating are not good for fat tire electric bike, they are generally more likely to be cold (electric vehicles tend to get 30 cents less electric power in winter than in summer, but are more afraid of

The battery is first charged for general maintenance and then discharged at a 2-hour rate. During discharge, the voltage of the battery of fat tire electric bike is continuously measured, and the “backward” battery with insufficient discharge capacity is selected