LiIon 2S1P receiver battery pack holder

Holder for JETI Power Ion 2600A 2S1P receiver battery pack or similar 2S1P Li-Ion battery packs suitable for fixing into a model using four servo screws. The model is supposed to be printed from PETG to withstand elevated temperatures inside a canopy. Overall weight is supposed to be around 8g. It requires a 10mm or up to 22 mm velcro strap.