According to a filing with the state of California, Seeo's battery technology may help to increase energy density by 50 to 100 percent, which could significantly increase the operating range of an electric vehicle.

Hayward, Calif.-based Seeo has an exclusive license to core patents from Lawrence Berkeley National Laboratory that could help Bosch produce lightweight batteries on an industrial scale.

Seeo's advanced lithium polymer cells have an energy density of 350 watt-hours per kilogram, roughly twice the level of batteries used in today's electric vehicles.

Read More