Want to increase the distance traveled on your electric bike? This plug and play kit provides all the components needed to add a second battery without the need for soldering or cutting any wires. The plug and play kit includes a 20A (20-72V) dual battery discharge balancer to balance (use higher charged battery first) and uniformly discharge voltage of both batteries without the requirements of voltage matching for hard-wired parallel connections. The kit also includes two 400MM (15.75in) XT60 (M-F) (14AWG) extension cables with braided wraps, two bullet to XT60 adapters (M, F) and two T-plug to XT60 Adapters (M, F). Best of all, the wiring and connectors are all black in color. The black color makes it easy to visually integrate your second battery wiring with the existing cabling and wiring for your electric folding bike, even if it's wired outside the e-bike body. Batteries will need to be charged independently. Second Battery not included. Disclaimer: These kits are designed for factory specifications and components.