BESTSUN Multifunctional TrustFire TR-006 Charger for 18650 14500 26650 Lithium Battery Charger Non-linear super power constant current switch of intelligent charger. It is a multifunction charger, suit for 16340, 18650, 25500, 26650, 26700 five different kinds of battery. The charger use the way of PWM, which is high voltage, large current-mode and constant current one. People can enjoy a fast and efficient charging battery. The charger with anti-battery-inversion circuit which ensures the safe of the charger and battery. In a certain voltage, the battery of charger can maintain a constant current and can control itself when the battery is full.