The COAST Zithion-X USB-C Rechargeable Lithium Battery set includes 4 AA and 4 AAA batteries, each with a built-in USB-C charging port that eliminates the need for a separate charging cradle. A 4-way USB-C charging cable is included, allowing multiple batteries to be charged simultaneously.

The AA batteries deliver 1.5V and 2400mAh (3.0Wh) capacity, while the AAA batteries deliver 1.5V and 750mAh (0.94Wh). Fast charging brings AA batteries to full charge in approximately 2.5 hours and AAA batteries in under 1.3 hours. COAST's ZX Optimized Voltage technology simulates the discharge curve of standard alkaline batteries, ensuring full compatibility with existing alkaline-powered devices such as flashlights, remote controls, game controllers, and walkie-talkies without flickering or performance loss.

Safety features include overcharge protection that automatically shuts off at 100%, along with overload, short circuit, over-voltage, high temperature, and leak-resistance protections. The batteries are certified CarbonNeutral products in accordance with The CarbonNeutral Protocol, making them an environmentally responsible alternative to single-use alkaline batteries.