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.