18650 Battery - Protect the battery from over-discharge and over-charger - Long lifespan - can be charged around 500 times

Note:

 - Battery may explode if charging or discharging improperly.

 - User must have knowledge of how to charge and discharge Ultrafire battery before making Ultrafire Battery Pack.  - Strongly suggest you using our smart Ultrafire battery charger to recharge the battery module. Never use DC    adapter to charge this battery pack.  -  We are NOT responsible for any damage that is caused by the misuse of the Ultrafire Battery.

WARNING:

1. The voltgae of full charge and empty condition is 4.2V and 2.75V.

2. Respectlvely It is dangerous to heat

3. Throwing into fire or charging reversely