Sep 22, 2010 #1 G gudurur New member Joined Sep 22, 2010 Messages 1 Reaction score 0 Points 1 The 10v rechargeable battery is for Lego Mindstorms. I didnt buy an additional transformer because I have a transformer which already has a 9v or 12v dc output.
The 10v rechargeable battery is for Lego Mindstorms. I didnt buy an additional transformer because I have a transformer which already has a 9v or 12v dc output.