A low‑profile battery retention system integrating flexible strap tensioning with precision‑machined interface points, engineered to hold taller battery packs securely in 4WD extreme heavy duty (EHD) RC applications. Construction balances rigidity and adaptability to keep battery modules stable during dynamic driving and jump landings.
• machined aluminum mounting brackets sized for tall battery arrangements, optimizing chassis fit and strength. • flexible strap elements sized around ~30 mm to maintain grip across a range of pack widths while absorbing shock loads. • engineered for taller LiPo pack profiles to prevent vertical and lateral movement under high acceleration. • modular front and rear hold points allow alignment with existing 4WD EHD tray holes without extensive modification. • durability focused on resistance to vibration and impacts common in off‑road RC usage. • lightweight design minimizes added mass while reinforcing battery stability. • retention straps can be tensioned quickly for efficient battery swaps during competition