...is what makes an EV go. Typically the most expensive part of an EV conversion. Not for me. I am using used Paccar Dual-Purpose truck batteries - cores that have been donated by Peterbilt Pacific Inc.
Whenever a set of four batteries are replaced in a truck, there is generally one or two that are still decent. I have gleaned 13 batteries from the core shed at work that have passed a 350 amp load test and that should get me to work and back. Here's hoping.
Here's most of them in a parallel charging array in my garage to keep them alive while they patiently wait to be abused in my car.