How to Build Zener Regulators for a Battery Pack

I'm making progress toward getting my US Electricar Geo Prism on the road. It hasn't run since it arrived on a flatbed from Indiana over a month ago.

Among the preparations I've made to get the car running, I just spent several days making zener-regulators to balance the charge going into each battery in my pack of 50 Odyssey AGM batteries.

I wanted to help other newbie electric vehicle builders with the basic process of building these handy and inexpensive components, so I made a video and put it up on YouTube. I'm no electrical engineer (that's my dad), but I'm sure those who are will comment on the quality of my work.

Oh well, learn by doing.

Here's the video: http://www.youtube.com/watch?v=pJ_Xlbw83Ko