Compatible with Bubba’s Smart Fish Scale and Pro Series Smart Fish Scale, the Bubba Smart Fish Scale Rechargeable Battery is a rechargeable lithium-ion battery cartridge that offers a cost-effective and environmentally friendly alternative to using AA batteries. Including a USB power cord to provide a quick and convenient means of charging, these high-quality rechargeable batteries are designed to put out more power and last much longer than non-rechargeable power options. A must-have for the traveling angler or anyone using Bubba Smart Fish Scales, it's always a good idea to always have an extra Bubba Smart Fish Scale Rechargeable Battery powered up and ready to go the next time the bite heats up! - Compatible with Bubba Smart Fish Scale and Bubba Pro Series Smart Fish Scale- Output 3.7V 2500mAh 9.25Wgh- USB charging cord included