Prius PHEV Battery Options
This is where you will find schematics, PCB layout, and parts lists for various Prius PHEV conversions.
Original CalCars Method
Further development of the PriusPlus History or Prius PHEV#Original CalCars Method has been postponed to persue the Prius PHEV#Hybrid-Pack Method so the original Battery Options can be found at Prius PHEV Battery Options-CalCars
Ryan and Rich Rudman are developing conversion kits based on an enhanced PFC-30 from manzanitamicro. The PFC enable the flexibility of battery pack sizes from about 10 to 30 batteries, among other battery management and charge rate enhancements. The first battery rack will be configured for 15 Hawker EP 26 or Hawker Areo AB26 SLA batteries. Since the PFC charger is used as a DC to DC converter it is possible to use a wide variety of battery packs configurations. Rich has also used a 20 and 24 battery pack of smaller 20Ah batteries similar to the EVP20-12B used by CalCars, and more recently Rich has also implemented a battery pack made up of 40Ah Thunder Sky Lithium ion modules. It is best if the add on battery pack is of a higher voltage than the OEM battery to reduce switching losses and increase the efficiency and power out of the PFC charger.