● Internal Charger Battery V-Mount. ● Light weight, compact, high performance Lithium-ion battery pack. ● Can be charged by itself without using external charger. LED indicator will light on from 1 LED to 5 LEDs during charging, and all off when fully charged. ● Five-step LED power status indicator shows accurately remaining battery capacity. ● Built-in intelligent IC circuit control, protection for over-charge, over-discharge, over current, outside circuit short and non-equilibrium in unconventional situation. ● Non-memory effect. ● Environment-friendly: No poisonous elements such as hydragyrum and cadmium, ect. ● Dynacore Batteries are manufactured according to CE,ROHS standard.