hamza_b I have been flying my MsWind for years with the single strap on front and velcro down the length of the battery, not just at the back. This has worked well and I've not had any issues with batteries dropping out so far. Although, I have long planned to make a tray mount to be able to slide the battery (6S5000) further back as the CG is too far forward as it is now.

- Thomas