This is a travel box for the Eachine QX90 micro quadcopter. There are slots for up to 8 600mAh 1S batteries. V1 of the case has 9mm slots for the batteries, which can be a very tight fit. V2 and V3 have 10mm slots so the fit is better. V2 has 4 storage areas for extra props and electronics, V3 only has 2 of these areas to better accommodate the stock FPV antenna.
Bed heat ~55C, this is a large part and even PLA will warp slightly.