One COAST ZITHION-X® rechargeable AA battery replaces up to 1,000 single-use batteries—cutting waste, saving money, and delivering reliable power with every charge. Engineered for performance and built to last, COAST ZITHION-X® lithium batteries offer a smarter, more sustainable way to power your gear. With proprietary ZX Optimized Voltage™ technology, each battery delivers steady, device-safe output that mimics the performance profile of alkaline batteries—ensuring long-lasting runtimes and seamless device compatibility while preventing flickering, overheating, or damage. The leak- and corrosion-resistant design adds extra protection during use, while fast USB-C charging makes powering up simple—no special cables or cradles needed. Average charge time: 2.5 hours for AA, 1.3 hours for AAA.