The world’s lightest rechargeable cell is here.

Two times the energy density of lithium‑ion cells.

A million times the potential.

Welcome to SolidEnergy.

Next-Generation Technology

What we all think of as today’s most advanced battery technology, Li-ion, is actually 30 years old. With lithium metal, we enter a new era in battery technology—lighter and more powerful, not to mention safer than ever. Our unique technology taps into the potential of lithium metal, while eliminating all of the past hazards. Discover how this breakthrough cell technology works.

SolidEnergy by the Numbers

  • 450+

    Wh/kg

  • 1200+

    Wh/l

  • 2x

    the energy

About Us

Started by a Harvard/MIT student team out of a world-renowned lab at MIT, SolidEnergy is home to a deep bench of proven battery experts. Learn more about our team and our vision of helping you realize your vision.

Connect with Us

If you’re interested in becoming an SES customer, investor or team member, we’d really like to hear from you. Have questions? Looking for more information? Whatever you need, we’re here to help you unlimit your potential.