battery retainer for Sport Cub RC airplane

thingiverse

This is a retainer designed to secure the 1300mah battery supplied with the Horizon Hobby/ParkZone Sport Cub. The design ensures the battery stays firmly in place beneath the black velcro strap. During my flying experience, the battery suddenly dropped from its holder while in flight. I assume it escaped due to the weak grip of the black velcro strap, causing the flexible door covering the battery to snap open. The key to this retainer lies in holding both the battery and the velcro strap tight, keeping them firmly connected. I've conducted extensive testing under intense aerobatic maneuvers and confirmed its reliability. Considering the battery is suspended upside down from a fixed point, velcro alone would be an unsuitable choice for maintaining retention.