3 PACK! UMMAGRIP - Universal Super Sticky Battery Pad

I admit I was skeptical at first, but this really is good. It can hold a 5000 mah lipo battery inverted without any straps holding it. I would not fly without holding the battery with straps but the pads hold the battery in place really well. I wanted to avoid using sticky back Velcro on the battery and this takes care of that. I will definitely use more in the future.

If your into RC, you need this. Sticks so well that just a firm velcro strap holds through wild helicopter 3Dmaneuvers.

Best grip out there