The 36V/10Ah (360Wh) lead-acid battery has a weight of 12kg. It can travel about 50km with a single charge, and the charging frequency is about 100 times. The usage time is about 1 year. If the lithium iron phosphate power battery is used, the same 360Wh energy (12 10Ah batteries are connected in series), the weight is about 4kg, the charging can walk about 80km, the charging frequency can reach 1000 times, and the service life can reach 3 to 5 years. Although the price of lithium iron phosphate battery is much higher than that of lead-acid batteries, the overall economic effect is better with lithium iron phosphate power batteries and is lighter in use.