See: Mugen Seiki

Mugen Seiki have introduced the new battery connector holder for the MBX8. The 3D-printed part was developed for the users who use the battery and receiver extension wires instead of the switch. The battery connector holder allows to fix firmly the connectors and prevent from a contact failure of the connectors due to vibration while vehicle is moving. The battery connector holder is fixed with two screws on the receiver box.