lithium & solar power LiFePO4
Toyota Prius Plug-in Conversion using Thundersky cells  (http://www.eaa-phev.org/wiki/Prius_PHEV)
This is a photo of the Do-It-Yourself plug-in conversion kit for Toyota Prius. Tha author is Jim Fell, Peterborough, England.  (Jim was using the older generiation of the ThunderSky cells - white color.)

Toyota Prius Plug-in Conversion using Thundersky cells  (http://www.eaa-phev.org/wiki/Prius_PHEV)

This is a photo of the Do-It-Yourself plug-in conversion kit for Toyota Prius. Tha author is Jim Fell, Peterborough, England.  (Jim was using the older generiation of the ThunderSky cells - white color.)

Toyota Prius Plug-in Conversion using Thundersky cells  (Enginer.us)
This is a photo of the commercially available plug-in conversion kit for Toyota Prius. The battery pack uses ThunderSky cells.  (-link-)
Yet another commercially available plug-in conversion kit is available from http://www.pluginsolutions.com/

Toyota Prius Plug-in Conversion using Thundersky cells  (Enginer.us)

This is a photo of the commercially available plug-in conversion kit for Toyota Prius. The battery pack uses ThunderSky cells.  (-link-)

Yet another commercially available plug-in conversion kit is available from http://www.pluginsolutions.com/

Toyota Prius Plug-in Conversion using Thundersky cells  (Czech)
This is a photo of the experimental Plug-in conversion made in Czech, EU. The battery pack uses 77 pcs of TS-LFP40Ah.

Toyota Prius Plug-in Conversion using Thundersky cells  (Czech)

This is a photo of the experimental Plug-in conversion made in Czech, EU. The battery pack uses 77 pcs of TS-LFP40Ah.