Battery Box Handle

This was my Christmas vacation project. I wanted to build my own 12v battery box, and the boxes I found didn't have a carry handle. So I used my 3D printer to make one. It is actually several parts that all connect together to make a semi-cool looking system that is easy to get inside when necessary.

The carry handle piece is a remix of: https://www.thingiverse.com/thing:22819

Parts:

About 1 ft. of 8AWG insulated wire (red and black)
Small Battery Box - https://www.amazon.com/gp/product/B0000B12YQ
40 Amp Breaker - https://www.amazon.com/gp/product/B01CSE4E66
12v Voltmeter - https://www.gearbest.com/other-motorcycle-accessories/pp_661629.html
12v DC Socket - https://www.gearbest.com/car-gadgets/pp_120177.html
DC Power Inverter - https://www.amazon.com/Samlex-America-450-Watt-Inverter/dp/B00KXFEVWA

Note: the Samlex 450 inverter sounds a VERY annoying alarm when the input voltage is low. If I had known, I probably would have chosen a quieter inverter.

Good luck if