[FrankJ]

One year we held the battery in with Velcro (actually hook & loop, but Velcro is shorter to type). No issues with them coming loose even with the robot upside down. They where difficult to change. I wouldn't recommend it. We continue to use a Velcro strap to secure the battery. We use Velcro to hold the radio. No issues ever even with inspectors.

I do perform FRC inspections. You don't fail robots for poor design choices except for where that design choice violates a specific rule. Like using hook & loop tape on bumpers. Using Velcro for securing things may or not be a good design choice depending on the application.