60 V means nominal voltage, 40 Ah means capacity.
Multiplying the two gives 60 V × 40 Ah = 2,400 Wh, which is equivalent to 2.4 kilowatt hours or 2.4 kilowatt hours of electricity.
That is to say, the storage capacity of this lithium battery has reached 2.4 kilowatt hours. If used on a regular electric vehicle, it can travel about 100-110 kilometers.
The voltage of a 60V lithium battery when fully charged is 72V, because 60V is the rated voltage of the battery and lithium batteries require a voltage slightly higher than the rated voltage to charge, typically 4.2V/cell. , and a 60V battery is usually made of 15 cells, so the fully charged voltage should be the sum of the voltages of all 15 cells, i.e. 4.2V/cell x 15 cells = 63V, plus loss of charger voltage. during charging, the fully charged voltage shouldbe approximately 72 V.