SureFire 18650 Protected Lithium Ion Rechargeable Battery with Ac & DC Car Charger, Black 18650 Protected Lithium Ion Rechargeable Battery Kit includes Cigarette Adapter and US Wall Plug Long-life rechargeable Li-Ion battery provides a minimum of 500 charge cycles Built-in PCM protects against overcharging, over-discharging, excessive current draw, and short-circuiting Manufactured in the U.S.A