Parallel connection suitable for 18650 battery, the battery holder case can be hold 3 x 18650 batteries, output voltage: 3.7V.

1. When the battery case is working, the maximum power should be less than 10W, the working current should be less than 2A.
2.Please pay attention to your battery heat generation while using this product and do not use the poor quality battery.
3. Kindly note that the battery is not included here.