Here is a pic of my vacuum pump for my brakes. Although this EV does not need much from my on demand regen brake, I want fully functional and nice traditional brakes as well. I was tempted to not use a vacuum system on this EV since it is being constructed with weight in mind, but I really want nice brakes if I am in too much of a hurry to use my regen brake.
The black round thing behind the motor is my vacuum storage tank, and you can see my vacuum switch on the frame rail.
I use four 30AH lithium batteries, wired in series for my aux battery that runs the headlights, wipers, and regular 12 volt stuff. This is my "squeeze box" that holds them in place. Just stick them in, and tighten the bolts.
Here they are installed in the box
The bus bars are pretty small, so I just cut them out freestyle with my 3" cutoff wheel, and then buzzed the corners off with my little roloc grinder.
A little work with my polishing wheel, and we get to have a beautiful product that is hand crafted in the USA. Stuff like that is getting hard to come by...
