Power up and press ahead. Compatible with COAST PS600R , PS600, and PS650 flashlights, the ZX700 ZITHION-X(TM) rechargeable lithium ion battery sets you up to charge your battery outside of your light. The battery features a built-in Micro USB port, a battery charge indicator-which flashes red during charge-up and shines solid green when fully charged-and overcharge/discharge protection circuits to make powering up as simple and safe as possible. Also outfitted with a USB-out port, the ZX700 can also serve as a portable power bank to charge your cell phone or any external device. The battery is backed by COAST's one-year warranty against defects in materials and workmanship. All COAST ZITHION-X(TM) batteries are protected with premium overcharge/discharge protection and are backed by COAST's one-year warranty.