TrustFire TR-006 Dual-Slot 25500 / 26650 / 26700 / 18650 / 16340 Battery Charger (AC 110~240V) Non-linear super power constant current switch of intelligent charger. In a certain voltage, the battery of charger can maintain a constant current and can control itsel It is a multifunction charger, suit for 16340, 18650, 25500, 26650, 26700 five different kinds of The charger use the way of PWM, which is high voltage, large current-mode and constant current one The charger with anti-battery-inversion circuit which ensures the safe of the charger and battery.