Adjustable 550 mAh Battery Attributes: 

Rechargeable

510 Thread

Surge Protected

USB Charger Included

Operating Instructions:

Thread USB charger onto the battery. Plug charger into USB port. 

Charge for 2 hours for a full charge.

Click the power button 5 times to turn on/off.

Click the power button 3 times to change voltage to the desired setting.

Press and hold the button to activate.