Plug-In Supply was formed in August 2007 to design, develop, and produce advanced technology battery packs. The primary focus has been to use these packs to convert hybrid cars into plug-in hybrid cars. The overarching philosophy of the company is to help speed the world's transition from burning fossil fuels to using sustainable, renewable, zero-emission power systems. For vehicles, that means electric cars.

From the beginning we have been a small group of Silicon Valley engineers working to develop cutting-edge battery pack technology. Some of the best minds in the San Francisco Bay Area have contributed to our technology. The Bay Area is the center of the electric vehicle (EV) world. We are awash in hybrid cars.

Product Concept

The current generation of hybrid cars have large gas engines and small battery packs. Think of it as the gas engine being the primary drive while the electric motor is the secondary drive. We believe that, over time, this will reverse. Traction batteries will grow more and more powerful while the gas engine will shrink in size, until finally, it disappears altogether.

You can drive the future today. Plug-In Supply plug-in hybrid conversion systems add a large battery pack to your hybrid car and our software makes the electric motor the primary drive and the gas engine the secondary drive.

In addition to manufacturing battery packs, we have adopted the additional mandate of creating and nurturing a Do It Yourself (DIY) Plug-In Conversion market. Now you can safely assemble your own high-power battery packs using our advanced components and designs. Our modular design lends itself to many applications from electric cars to stand-by power packs for off-grid use.