This battery bridging cable is necessary when using two or more ePropulsion E series  batteries to power a motor. The power cables that leave the motor will run to one battery, and the battery bridging cable will connect the batteries to each other. Kit includes two cables, positive and negative. Compatible with the ePropulsion E60 and ePropulsion E163. Available in 0.15m, 0.45m, 1.5m, and 5m lengths. If you need these battery bridging cables, you'll also need an ePropulsion battery communication cable kit.