Dual-Slot Rechargeable 18650 Lithium Battery Charger - Black (EU Plug)
Indicator status: Green is standby red is in charging green light flashes is over-voltage (4.21V) red light flashes is battery failure or short circuit; Two slot independent design for normal 18650 battery or 18650 / 17670 lithium battery with protection; Dual-communication circuit dual-channel smart IC; Two-wire output; With the protection of over-current short circuit cut off the power after fully charged; Prevention reverse connection of battery; Charging method: Constant current then constant voltage.