Specs

Battery
Nominal:  5 Ah, 52.4 V, 262 Wh

Chemistry 
LiFePO4

Weight
Two-X adds 4.2 lb, or 17%, to your board's weight.

Enclosure Dimensions
9.2 in x 4.5 in x 1.3 in, at longest point (x2)

Main Pack Dimensions
8.4 in x 5.6 in x 1.1 in

Color
Black