The charging requirements of lithium batteries are different from nickel-cadmium nickel-metal hydride batteries, and the rechargeable lithium battery cell voltage is 3.6V (some battery blocks may be nominally 3.7V). With the full charge, the lithium battery voltage will slowly rise, which is also a sign to judge whether the lithium battery is full, and the general manufacturer recommends that the charging voltage be 4.2V (in the case of a single lithium battery).

If there are friends who want to charge lithium batteries independently, you need to pay attention to its charging method is different from the constant current charging method used in nickel-cadmium nickel-metal hydride batteries, and ordinary nickel-cadmium nickel-metal hydride battery chargers cannot be used.