Battery box is home made.
Mock up using a sheet of card, cornflakes box whatever, to get the sizes and bends right.
Use that as a template on a sheet of thin aluminium. Bend in a vice using angle steel as guide bars.
Fiddly but if you do all your testing on the card pretty straightforward.
I need to make another version of the battery box as I am not 100% happy with it.
Mock up using a sheet of card, cornflakes box whatever, to get the sizes and bends right.
Use that as a template on a sheet of thin aluminium. Bend in a vice using angle steel as guide bars.
Fiddly but if you do all your testing on the card pretty straightforward.
I need to make another version of the battery box as I am not 100% happy with it.