UNIVERSAL COMPATIBILITY》》》The 2-Slot battery charger is compatible with rechargeable battery such as Li-ion 3.7V battery(26650, 26500, 22650, 20700, 18700, 18650, 18490, 18350, 17670,17500,16340(RCR123),14500, 10440, 10340)。❗ Note:Only for Lithium -ion Rechargeable Battery,Not AA or AAA Battery,Not NiMH Battery. MORE SAFETY》》》This battery charger is safe which is made of fire prevention PC+ABS material. Built-in intelligent circuit protection will protect against short circuit, overheat,over voltage; with heat-resistant, low temperature resistance. SMART CHARGER 》》》Red light when charging, smart LED charging indicator status which turns from red to green when fully charged.The 2 slots can be adjustable for different battery length, can independent charging. USB CHARGING》》》The USB battery charger can help travelers recharge their lithium-ion batteries anytime, anywhere, especially if you don't have enough outlets, and you can even simply plug it into your laptop,Computer, or other device. WHAT YOU GET》》》1*2-Slot 18650 Battery Charger PACKAGE INCLUDED:

1*2-Slot Battery Charger