Battery Strap

A battery strap holds your LiPo battery to the frame during flight. It’s a small, cheap component that plays a critical safety role — a battery that ejects mid-flight means a guaranteed crash and a potential fire hazard from an uncontrolled falling LiPo.

Strap Types

Rubberized Battery Straps

The standard choice. Made of rubber or silicone-coated nylon, these straps wrap around the frame and battery, secured with a buckle or Velcro.

Pros: Cheap (~$1-2 each), grippy surface holds the battery well, easy to use Cons: Wear out over time, can snap in a hard crash

Recommended: 20mm width for 5” quads. The wider the strap, the more secure the battery. Metal buckle straps are more durable than plastic buckle versions.

Velcro Straps

Hook-and-loop straps. Quick to apply and adjust.

Pros: Very fast to swap batteries, adjustable length Cons: Less secure than rubberized straps, Velcro weakens over time, can snag on grass

Zip Ties (Emergency)

In a pinch, zip ties work. Not recommended for regular use — they’re not adjustable and must be cut off to change batteries.

Battery Pad

A non-slip pad between the battery and the frame prevents the battery from sliding under acceleration:

• Rubberized grip pad: Sticky rubber sheet, cut to size. Most common.
• 3D-printed TPU pad: Custom printed pad for your specific frame. Lightweight and effective.
• Double-sided grip tape: Quick solution. Can leave residue on the battery.

Always use a battery pad. Without one, the battery slides backward during hard acceleration, shifting the CG and potentially pulling the XT60 connector loose.

Installation

1. Attach battery pad to the top plate (or bottom plate, depending on your frame’s battery position)
2. Route the strap through the frame’s strap slots (most frames have them)
3. Place the battery on the pad, centered for proper CG
4. Tighten the strap firmly — snug enough that the battery doesn’t move, not so tight you’re crushing the LiPo cells
5. Tuck the strap tail so it doesn’t flap in the prop wash

Tips

• Carry spare straps: They break. Keep 2-3 extras in your bag.
• Double strap for heavy batteries: If using a large battery (1500mAh+), use two straps for extra security.
• Check before every flight: Straps stretch and loosen. Verify the battery is secure before each takeoff.
• Battery placement affects handling: Moving the battery forward or backward shifts the center of gravity, which changes how the quad flies. Most pilots center the battery, but some intentionally offset it for specific feel.
• Top-mount vs bottom-mount: Some frames mount the battery on top, others underneath. Bottom mounting lowers the CG for more stable flight but exposes the battery to ground impacts on crash landings. Top mounting protects the battery but raises CG.