Hi, I'm a first time PUP owner and need to offload some tongue weight to match my TV limitations (while keeping the 10% ratio). One of the things I plan on doing is moving my battery to the rear of the PUP or in my car. However, the previous owner explained that the battery is required while driving to activate the electric brakes in case the PUP get physically detached from the TV. Is this true? Can a very light battery be used for this purpose (PUP detached from TV)? Assuming my 1st plan will be to move the battery to the rear of the PUP (bumper), I would prefer not having to re-wire anything and just put it back on the tongue when I setup camp. Worst case, I leave the battery in the rear permanently and wire accordingly.