The Universal Rechargeable Battery Pack from Fishman is a rechargeable lithium-ion battery pack designed to power Fishman Fluence pickups, 9V pickups, and other 9V accessories. Its current capacity is similar to that of a premium 9V alkaline battery.It provides up to 200 hours between charges, and features an LED indicator for battery status. Recharge it, from empty to full, in three hours or less via the supplied USB cable.The Universal Rechargeable Battery Pack requires no modification to your guitar for installation. Lithium-ion battery pack Power solution for Fishman Fluence pickups, 9V pickups, and other 9V accessories Recharge via included USB cable Three hours to recharge from empty to full Up to 200 hours between charges LED battery status indicator Requires no modification to guitarUPC: 605609152640In the Box Fishman Universal Rechargeable Battery Pack Connection Wire USB Cable Micro-USB Cable Limited 1-Year Warranty