Fishman Rechargeable Battery Pack SCBK, Lithium Ion Power Supply Solution for Fishman Fluence Pickups, Direct replacement for the tremolo cover on single cut electric guitars, Does not require modification of your guitar and can also be used for other on-board 9 V pickups and accessories, Has a charge capacity similar to a high-quality 9 V battery, Rechargeable via a standard mini-USB cable, LED displays show the level of charge, Full charge time in 3 hours or less, Dimensions (W x D x H) 92 x 130 x 10.8 mm, Weight: 68 g, Colour: Black, Includes connection cable, USB cable and micro USB cable