18650 Lithium Battery Pack:
1. Large capacity. 18650 lithium battery capacity is generally between 900mAh - 2600mAh. 

2. Long life. Cycle life can reach more than 500 times.

3. High safety performance. No explosion, no combustion, no poison, no pollution.

4. High voltage. 

5. No memory effect. Before charging Do not have to discharge the remaining electricity, easy to use.

6. Small internal resistance. Greatly reduces the battery self power consumption.