Rechargeable 14500 (AA) Lithium Ion
This is the same as the Ultrafires but at a lower price for you cheap asses, if you want your electronics to be safe & last longer, use the CGI ones. We will not guarantee anything, we will just laugh if anything spoils.
14500 Rechargeable Lithium Ion for use with your compatible flashlights
Voltage: 3.7 volts
As usual, when using such high powered batteries, do ensure your flashlight is able to handle the voltage before even slotting them in.