Pack power with purpose. COAST ZITHION-X® rechargeable lithium batteries change the game in responsible, portable power technology. Advanced engineering provides a comprehensive upgrade compared with other sources of battery power—delivering long-lasting run times. Proprietary COAST ZX Optimized Voltage™ technology is designed to mimic alkaline batteries for seamless device compatibility and performance you can trust, while preventing flickering, overheating, and damage to products. The leak-resistant battery components protect against corrosion during use—matching performance with protection. Connect conveniently via USB-C to recharge quickly with 2.5 hour average charge time for AA and 1.3 hour average for AAA—and forget about special charging cables and cradles. Every ZITHION-X® can be recharged many times, resulting in cost-savings compared with single-use disposable batteries while keeping hundreds of batteries out of the landfill.