IMO tape still holds the batteries the best...but that all depends...Ive seen the quad 12 and he has a very good design for the batt strap.
I have a quick question...I dont know if anyone on here runs a yok worlds car, but is it normal to have to shave down those fat black AE front body posts to mount an ascari? I had to shave mine to nubs
...seriously I probably took off half the post. Just wondering....it was a pain in the...rear....to get those the right height...maybe im just cutting the body wrong..