4pcs 18650 Battery and Battery Charger for 3.7V AA AAA 18650 IMR Li-ion Rechargeable Batteries with Green/Red LED Display

Specification of USB battery charger:

Input: 5V USB (Worldwide used voltage) Max: 1000mA

Output: 4.2V DC 500mA

Compatible: 10440/14500/16340/18500/18650 3.7V li-ion battery

Battery charging rate: over 80%

No Load Power Consumption:1W MAX

Full Load power consumption:7W MAX

Size: 12.5*3*7 CM Weight: 2.5oz

Compatible with: 10440/14500/16340/18500/18650 3.7V li-ion battery

Tips to keep 18650 batteries long lifespan and maintain capacity rating

You do not deep discharge before recharging 18650 batteries. The capacity of 18650 battery reduces to less than 50%; you should recharge it.

The high temperature will cause short lifespan and reduce capacity rating. That why you do not store it in high temperature and quick recharge it at high-charging-current as well.

You should buy a smart 18650 battery charger which is worth the money. NK-206 Professional charger, the better choice.

Universal Charging

Universal Charging Compatibility: You can charge various 3.7V battery 26650, 22650, 18650, 18490, 18350, 17670, 17500, 16340, 14500, 10440. Don't support to charger Alkaline battery.

Support USB charging help travelers can charge liion batteries anytime anywhere, especially when you don’t have enough outlet,you can even simply plug into your laptop or other device.