We use 3M™ Dual Lock™ as an alternative to traditional hook and loop fastener for securing batteries and other onboard equipment.
Type 250 stem density polyolefin fastener with mushroom shaped stems backed with a white, general purpose acrylic pressure sensitive adhesive. Unlike hook and loop, you use the same material on both sides and squeeze together until it 'clicks'.
Expensive but effective.
Contains one 12" / 30cm strip (1" wide)