H1 with dual 18650 battery

The stock batteries for the H1 case can be hard to find and don't last for long, I thought it would be hilarious to instead add 2 behemoth 18650 battery slots on the back, demolishing all kind of practicality in the name of battery capacity and replaceability. Batteries are meant to be wired in parallel and are not guaranteed to be compatible, so: WARNING: LITHIUM BATTERIES ARE DANGEROUS. BE CAREFUL! MAKE SURE BOTH BATTERIES ARE CHARGED TO THE SAME LEVEL! OTHERWISE THEY WILL RAPIDLY EQUALIZE. I AM NOT RESPONSIBLE FOR ANY KIND OF DAMAGE!!! The cap can also be a little tight so if youre using particularly stiff filament you might want to print the cap slightly larger. You can salvage electrodes from other battery holders and heat set them in place or you can just use folded up aluminum foil. I might make a single battery ver is the future since this is stupidly overkill. This is my first public model, be nice!