1, the amperage of the charger is different. For example, the charger of the most commonly used electric vehicle inputs 220 volts, and it outputs 54.6 volts. The current is about two amps, three amps or five amps. They are different. Some chargers also have 60 volts and 72 volts.

2. The greater the amperage on the charger, the greater the capacity, the smaller the number, the smaller the energy, and the greater the ah of the charger, which means the greater the capacity of the charged battery. The big one is easy to charge the battery, and the small one is not fully charged.