POWERplus Bob Cat Saltwater Car STEM Kit

Build Your Own Saltwater Buggy

The POWERplus Junior Bob Cat is a DIY STEM construction kit that allows children to build a working buggy powered by a saltwater fuel cell. It combines hands-on construction with energy-based learning.

Saltwater Fuel Cell Technology

The vehicle runs on a magnesium-air (Mg-Air) fuel cell. After adding a small amount of saltwater solution, a chemical reaction generates electricity to power the motor—no batteries required.

How the Model Works

The saltwater acts as an electrolyte, enabling a reaction between the magnesium plate and oxygen from the air. This reaction produces electrical energy, which drives the motor and moves the car forward.

STEM Learning Through Practice

This kit introduces concepts such as alternative energy, basic chemistry, and energy conversion. It supports learning through building, testing, and observation.

Racing Buggy Design

The model features a lightweight buggy structure designed for smooth movement on flat surfaces, adding an engaging play element after assembly.

Skill Development

Building the model helps improve fine motor skills, logical thinking, and the ability to follow instructions. It also encourages curiosity about science and technology.

Key Highlights

• DIY saltwater-powered buggy car
• Uses Mg-Air fuel cell technology
• No batteries required
• Includes replaceable magnesium plates
• Approx. 15 minutes run per fill
• STEM educational construction kit
• Encourages creativity and learning
• Suitable for ages 8+

Important Operation Details

• Requires a saltwater solution (salt + tap water)
• Each fill provides approx. 15 minutes of operation
• Magnesium plates are consumable and replaceable
• Included plates provide approx. 12 hours total use

Complete Set Includes

• Buggy construction components
• Saltwater fuel cell module
• 3 magnesium plates (anodes)
• Electric motor and gear components
• Pipette for adding solution
• Step-by-step illustrated instructions

Easy Assembly

The kit includes clear instructions for guided assembly. Some tools may be required (not included). Adult supervision may be helpful.

Usage & Safety Notes

• Use clean saltwater solution only
• Contains small parts; not suitable for children under 3
• Adult supervision recommended during assembly
• Clean the fuel cell after use for best performance

Product Details

• Brand: POWERplus
• Series: Junior
• Model: Bob Cat Saltwater Buggy
• Toy Type: DIY STEM Construction Kit
• Power Source: Saltwater fuel cell (Mg-Air)
• Material: Plastic
• Recommended Age: 8+