Fast charging/discharging hybrid EV batteries originally used in Chrysler Pacifica vehicles are perfect for high powered 400V EV conversion projects!
 
Each module is 60.8V, so groups of 6 pair together to power your 400V EV conversion, or groups of 12 for your 800V conversion.  We have personally used these batteries in multiple EV conversions, and can attest to their capability to power 500-600hp Tesla LDU's.