Robot Advance allows you to create or to modify your robot. ...
7.2v Robot Battery
This is the same VEX 7.2V Ni-Cad Battery for your Robot that comes in the VEX Power Pack.
You can now stock up on extra Robot Batteries so you can have replacement batteries ready when you need them.
Compatibility :
• Use with any VEX Microcontroller (V0.5, Cortex M3, or VEXpro ARM9).
• Charge with the VEX Fast Battery Charger