High energy density
The weight of lithium-ion batteries is half that of nickel-cadmium or nickel-hydrogen batteries of the same capacity, and the volume is 20-30% nickel- cadmium and 35 to 50% nickel-hydrogen.
High voltage
The operating voltage of a lithium-ion battery cell is 3.7 V (on average), which is equivalent to three nickel-cadmium batteries or nickel-metal hydride connected in series. .
Pollution-free
Lithium-ion batteries do not contain harmful metal substances such as cadmium, lead and mercury.
No memory effect
The memory effect refers to the phenomenon that the battery capacity decreases during the charge and discharge cycle of nickel-cadmium batteries. This effect does not exist with lithium-ion batteries.
Ordinary AA is 1.5V and lithium AA is 3.7V
AA is the battery model specification,so there is basically no big difference in appearance
21 other types The voltages and capacities of the batteries are different, so you need to confirm whether they can be used on the same product, so that the duration of use cannot be compared