Originally Posted by philso
You may want to use something like a non-conductive bar (wood?) that gets locked on top of the batteries and is visible from outside the cart when it is in place. Bungee cords will work if they are not too loose and if they are actually installed correctly. When they don't work, you can end up having to clean up the acid from batteries broken open by bouncing around in the cart.
Does the school own the truck or does it rent one each time your team goes to an event. You will want to make sure you have sufficient clearance under the cart to go from a ramp to the truck bed. The steeper the ramp, the more clearance you need. The team I currently mentor has a bunch of large cabinets that a previous mentor built for them. The casters give only around 6" of ground clearance. They have to rent a low deck trailer (no steep ramps) to get them to events. The trailer rental apparently cost them over $600 last year.
Tbh, I have no clue about school truck situation. First time they're giving transport so gotta see what they come up with.