2 hour charging time and consistent 1.5V are game changing. Stop buying single-use batteries and get a modern solution. Designed for performance convenience and reliability, our C batteries will help you reduce waste and save money and time.. Fast Charging Lithium Battery1000+ Charge Cycles. Convenient USB Charge PortJust plug any USB-C or micro USB cable or use the included cable to charge four batteries at once.. Built-In LED Charging IndicatorPaleblue Batteries let you know when they are fully charged.. On-Board Smart Technology Provides Safe ChargingNo more batteries ruining expensive electronic devices!