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Saltwater Fuel Cell Robot

STEM
Alternative Energy
Ages 8+

Power a walking robot using only salt water.

$29.95

Build a sleek, adorable walking robot powered entirely by salt water and magnesium — no batteries required! Discover how a metal-air electrochemical cell stores and discharges electrical energy, as an innovative pump drips salt water onto magnesium plates, letting your robot walk for up to an hour on just one drop. The reusable fuel bottle offers hours of exploration into safe, renewable green energy technology.

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Inside the manual

Additional Info

Developed by educators and scientists
Step-by-step build instructions
Engaging illustrations throughout

Download Manual

What's in the Box

Piece Count: 62
28 page manual

Deeper Dive

Build a sleek, modern and adorable!) walking robot powered by salt water and magnesium — no batteries required!

Discover how a metal-air electrochemical cell stores and discharges electrical energy using a simple saltwater solution. Explore the science of electricity, currents, and electric potential. An innovative pump mechanism provides a steady drip of salt water onto the magnesium plates and the robot walks for up to one hour on just one drop of salt water! The “fuel” bottle is easy to clean, refill, and reuse for hours of exploration.

A full-color manual includes step-by-step assembly instructions and delves into how this green technology offers a truly safe, non-toxic, long-lasting, and renewable source of energy.

Ages

8+

Experiments

1

Piece Count

62

Manual Pages

28

Product Dimensions

8.8 x 11 x 2.6 in.

Product Weight

0.7 lbs

Manual Dimensions

5.5 x 8.3 in.

Batteries Required

N/A

Country of Origin

Taiwan

Year Released

2025

Reviews

Straight from real parents

We envision a world where everyone loves to learn.

Our products inspire kids and families to think deeper, play longer, and figure stuff out.

Heritage Fuels Discovery

With 200+ years of science publishing behind us, we've helped shape the STEM category worldwide. That heritage guides every product decision, from content development to quality standards.
Curiosity, Engineered

We solve engineering problems most toy companies wouldn't attempt. GeckoBot climbs glass, Gecko Run builds marble runs on walls, and the Mega Cyborg Hand, a wearable hydraulic exoskeleton, was the #1-selling science toy in the US in 2025 (Circana).

Curiosity, Engineered

We solve engineering problems most toy companies wouldn't attempt. GeckoBot climbs glass, Gecko Run builds marble runs on walls, and the Mega Cyborg Hand, a wearable hydraulic exoskeleton, was the #1-selling science toy in the US in 2025 (Circana).
Everyone's a Scientist

We turn complex science and technology into fun, hands-on experiences for kids and families. From crystal growing to advanced robotics, we make the challenging feel approachable and the approachable feel exciting.

Everyone's a Scientist

We turn complex science and technology into fun, hands-on experiences for kids and families. From crystal growing to advanced robotics, we make the challenging feel approachable and the approachable feel exciting.

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Saltwater Fuel Cell Robot

Inside the manual

Additional Info

What's in the Box

Deeper Dive

Straight from real parents

We envision a world where everyone loves to learn.

Heritage Fuels Discovery

Heritage Fuels Discovery

Curiosity, Engineered

Curiosity, Engineered

Everyone's a Scientist

Everyone's a Scientist

Ages

Science

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Play & Crafts

For Educators

Robotics

Saltwater Fuel Cell Robot

Inside the manual

Additional Info

What's in the Box

Deeper Dive

Straight from real parents

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Heritage Fuels Discovery

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