4 of them pushing 12v bulbs in series
All of them power on together. All mods done. I love the click all the relays in them make, slightly out of time, as they power up.
I ended up setting all at the highest voltage I could get them. Between ~12.9v-13.2v, and no I'm not worried about the difference in voltage. You need to worry about that when they're in parallel.
Did 4 units today - coffee and the punk rock station on http://grooveshark.com
Stripping the lil wires was time consuming, but much quicker if you assembly line it.
Made a little drawing so I wouldn't forget.
Bad picture, but this is how the main charge leads get on there. Sort of a pain. Lots of solder and a BIG soldering gun required.
For the board to fit with the bottom charge lead, I had to cut off a small part of the bottom of the case.
More pictures tomorrow.
All I need now is to install the power switch and the power jack.
Then a meanwell + battery pack next month.
I'm thinking of doing a nice write up of this project on my site. Might get some press on the gadget blog sites. This project is fantastic from a time/value perspective. It'll probably be something that is very useful for larger EV conversions. Those big chargers are $$$, and this one is only $100. And it is usable with any pack or whatever you want to use it for; from a ping pack up to a full on motorcycle sized pack. If it works, it'll probably be the last charger i need.