This is the 3.7V 450mAh 1S LiPo battery for the Traxxas DR-1 Heli.
Features: 1S shrink wrapped cell
Includes: 3.7V 450mAh 1S LiPo Battery for the Traxxas DR-1 Heli with white 2-Pin Connector
Length 1.3 (34mm)
Width: 0.98 (25mm)
Thickness: 0.31 (8mm)
Weight: 0.53oz (15g)
Note: Charge only with the Traxxas USB Charger