I was playing with the idea for a hatch for the tank compartment and/or battery up front but decided to scratch the idea on my first build. Partly because the manual discouranged this due to structual strength, although, I've seen many having at least done the tank hatch.

I'm at work now, but my battery installation basically consisted of putting a piece of velcro up front under the tank. The battery is stuck in there pretty good now, in fact, when trying to remove it I had to use a flat metal ruler to release the grip of the velcro since there's not enough space to get your fingers in there.

I'll see if I can't post a picture later tonight. The more I read, the more convinced I'm that putting a hatch in is generally a good idea. A little planning/work up front could possbly save tons of work later

-tychoc