Battery holder system

You can use it instead of ummagrip. it is cheap, you dont need to cleen it, and it hold the battery really hard. I made this one for my frame, but you can change it to your. it also will work in regular battery mount. Plate, which you glue to the battery is only 3g. This is where I saw it 1st time https://www.youtube.com/watch?v=a7I_Yg-HGPQ&t=608s

TPU 95A, 4 walls, 0.2mm height, 0.6mm width, 20% infill