Which Size Battery Fits Your Classic LED Hoop?
Classic Hoops are built in 3/4 and 5/8 tubing for most sizes
5/8 LED hoops use a 10440 lithium-ion battery (similar to AAA size)
3/4 LED hoops use a 14500 lithium-ion battery (similar to AA size)
Removable Hoop Battery Sizes for Classic LED Moodhoops
These hoop batteries are interchangeable with PixelHoops and FutureHoops.