4:LED Charge level indicator: Power display can show remaining power in order to avoid over-charging & over-discharging.
1:Battery type: Lithium-ion, Voltage: 18V, Capacity: 5000 mAh.Get CE,ROHS UL Certificate. Suitable for Makita 18-volt battery and charger (used with DC18RD DC18SD)
3:Battery Protections: Made with high quality battery cells, Built-in protection against overcharge, over-discharge, over-current provides short- circuit protection and constant voltage circuit.