Actually, there IS a rule that says you need to have a battery:
<G19> MINIBOTS must remain completely autonomous and move up the POST solely through electric energy provided after the start of DEPLOYMENT by the permitted, unaltered battery and converted to mechanical energy by the permitted unaltered motors (and associated, appropriate circuitry).
Quote:
Originally Posted by Eulipian
Can you please refer to the rule that requires the battery to be attached to the minibot?
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Sure, R91 says that the minibot can't exceed 12x12x12 inches:
<R91>The MINIBOT may not exceed a 12” x 12” x 12” volume and weigh no more than 15 lbs. MINIBOTS will be inspected for the volume constraint by being placed in a five-sided box with internal dimensions of 12" x 12" x 12". If the lid (the sixth side of the cube) does not seat properly, the MINIBOT does not pass this part of the MINIBOT inspection.
This size constraint on the minibot remains in effect throughout the match; this was stated by the GDC in a Q and A forum post:
http://forums.usfirst.org/showthread.php?t=16288
This would seem to preclude tethered batteries.