1s-2s sleeve

This object was made in Tinkercad. Edit it online https://www.tinkercad.com/things/3bWKegACCRv

I made this because I only have 1s batteries and fly with 8.5x20 motors in a BetaFPV 85 frame for brushed motors. Looks like the frame was designed for 2s batteries, which I don't have and don't want to go buy, so I took about 5 min, did a little measuring, and made this. Is a tight fit into the frame, and the battery is also a smooth fit, so I don't have to worry about it coming loose in flight. Let me know what you think of it.