Shorepower uses the Plug-In Supply kit to add 20 lead-acid batteries to the stock battery pack that comes with the car. The extra batteries fit in the rear cargo compartment under the carpet, with a metal lid between batteries and cargo.

• A converted car can go up to 50 mph on EV-only power, as opposed to about 42 mph for an unconverted Prius.
• Car can go an estimated 8-12 miles in EV-only mode
• Fuel economy can be as high as 80 mpg, according to Shorepower’s tests
• $6,700 includes parts, labor, and shipping the kit to Shorepower’s HQ for the conversion

The company also does EV conversions and uses the Hybrids Plus kit to swap out the factory lead-acid batteries for lithium-ion packs in the Ford Escape. Shorepower is also responsible for the new curbside charging stations popping up in the Portland metro area.

This isn’t an endorsement, and I’ve never used a Shorepower product, but it’s good to know who the reputable businesses are as the U.S. switches from a gas-dependent model to having choices in alternative fuels.

Images of the conversion to come.