WindFire&reg; LED Display USB 3-Slot Smart Battery Charger for 18650 / 25500 / 26650 / 26700 / 32650 and Any Other Type Ni-mh Batteries, Lithium Iron Phosphate Batteries Adopting the technology of PWM control charging, it makes the battery keep a stable current in a certain voltage Multifunctional Charger can charge almost any sized Lithium Ion Rechargeable Battery When in 3V, it can simultaneously charge and identify 1.2V ni-mh batteries, 3V lithium iron phosphate batteries. USB interface for cellphone, tablet and other USB devices. When in 4.2V, it can rapidly charge 18650, 25500, 26650, 26700, 32650 type batteries