Here are my new lithium batteries next to one of the old 6-volt batteries for comparison.
In order to make sure each lithium battery behaves like all the rest, I had to bottom balance the whole pack, one battery at a time. I made this balancer, in an ammo can, to do the job automatically.
Here is Electro-Willys and the Juice Box. This is the Juice Box in one of it's early stages of construction. For a look at the construction progress for Juice Box, check out E-W's Juice Box album.