RE: PA Addiction X??
A ProBro told me not to use velcro on the battery tray. You will break the tray trying to remove the battery. He said to just use sand paper, and the velcro on the battery itself will hold the battery in place with a velcro strap. This is the method I used. I have some Great Planes sanding bars that use the Great Planes self adheasive sand paper rolls. I cut a stip off the roll and stuck it to the battery tray. And I can say it works very well.