It's a spare battery pack for your Rover.

Fits 1.6 version of the rover with updated mounting points.

Parameters:

• Li-Ion 6S (11,1 V) 5000 mAh with internal PCM
• Waterproof case (IP66 compliant)
• Green LED power switch with internal relay
• 3-pin waterproof connector

The battery estimated to be enough for 4hrs of nominal driving or 8hrs of video streaming.

Charges ca. 1,5 hour with nominal current.