Charge up and keep working. Compatible with the COAST EAL40R Area Lantern, the ZX740 ZITHION-X™ rechargeable lithium-ion battery features a built-in USB-C port for easy charging as well as a USB-C Charge out Port that can be used to charge external devices such as a cell phone. A battery charge indicator flashes red during charge-up and shines solid green when fully charged. The overcharge/discharge protection circuits make powering up as simple and safe as possible. The battery is backed by COAST’s one-year warranty against defects in materials and workmanship.