• Designed to outperform alkaline batteries • Fast charging with a USB-C port on each battery • Easy to use included charging cable can charge 2 batteries at once • Each Paleblue battery can prevent up to 1,000 single use batteries from being thrown away USB-C RechargeableCharge directly with the included USB-C cable. No proprietary chargers or docks required. 90-Minute Charge TimeFully charged in under two hours for quick turnarounds between uses. 9V Constant VoltageStable output for better performance in high-drain devices like headlamps, remotes, and game controllers. Smart Battery ManagementBuilt-in protection circuitry prevents overcharging, overheating, and short-circuiting. 1 Battery = 1,000+ DisposablesEach cell replaces hundreds of single-use batteries over its lifetime, reducing waste and cost. Responsibly DesignedPackaged in GRS-certified post-consumer recycled plastic, designed with sustainability in mind. ***Most smoke detector and carbon dioxide detector manufacturers do not recommend using rechargeable batteries in their products. Always double-check the instruction manual and manufacturer’s recommendations before making the right battery selection. When in doubt, do not use rechargeable or rechargeable lithium batteries in your detectors.***