Operating temperature: 0-50 Celsius

Supply voltage: 3.7V/4.2V
Made of fireproof board and flame-retardant plastic, safe and durable
Compact and lightweight, plug and play, simple and easy to use
Reliable overheating, overcurrent, overcharge, and overdischarge protection
Equipped with LED indicator light, the red light is on when charging, and the green light is on when fully charged
Material: ABS
Input: DC 5V
Output: 4.2V 500 ma / 3.7 V
Compatible battery: 18650/26650/14500 rechargeable battery
Fast charging, overcharge protection