Ni-MH and Ni-Cd are both early batteries, and there are not too many requirements for charging. However, due to the memory effect, they must be used up before charging. There are not so many requirements for lithium batteries, but the requirements for chargers are high, and there must be protection and intelligent charging devices. The voltage levels are different and cannot be used universally.

Chargers are very demanding.

Lithium battery charger requires high protection and intelligent charging device.

memory effect

Ni-MH and Ni-Cd batteries have memory effect, so they must be used up before charging.

Different voltage levels

Different batteries have different voltage levels and cannot be used universally.

trickle charge

Trickle charging is a better charging method, and the output of the charger will be larger when the battery is fully charged.

Lithium batteries are safer.

Lithium battery charging has no memory effect and is more convenient. The special charger is safer.