Five33 TinyTrainer Battery Holders

Here are 2 different methods to mount battery for the Five33 TinyTrainer.

The flat/wide "tray" rolls around as a sleeve and was re-mixed from FlyFive33's design (4315912). This modified version was specifically designed to fit RCBattery.com Liperior 3S 65C 500 and Liperior Pro 3S 75C 450. See notes below for my recommendation to have good grip while not too difficult to slide battery in/out.

The other one ("pad") I designed from scratch with integrated diversity antenna mount. Print both left and right halves by mirror-flipping one for the slicer. I use double-side tape on the TPU halves while reducing stickiness on the battery side with a few presses from my oily/sweaty fingers. You'll need skinny 10cm-wide battery strap for this battery mounting method.