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4M Toysmith, Green Science Salt Water Powered Robot Kit, STEAM Powered Kids, Beach Toy, For Boys & Girls 5+

4.3 4.3 out of 5 stars 4,120 ratings

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Salt Water Powered Robot Kit

Purchase options and add-ons

Size 1 EA
Brand 4M
Theme Robotics
Age Range (Description) Kid
Item Dimensions LxWxH 2.5 x 6.5 x 8.5 inches

About this item

  • This robot kit is a hands-on learning experience that illustrates the value of alternate energy sources
  • The robot is powered by the chemical reaction of salt water and charcoal, and is safe and non-toxic
  • This kit contains all the parts and materials needed to create a salt-water powered robot
  • Detailed assembly instructions included
  • Recommended for ages 8 years and up

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4M Toysmith, Green Science Salt Water Powered Robot Kit, STEAM Powered Kids, Beach Toy, For Boys & Girls 5+


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Product Description

Product Description

Create a robotic racer using the 4M Salt Water Powered Robot Kit. This robot kit is a hands-on learning experience that illustrates the value of alternate energy sources. The robot is powered by the chemical reaction of salt water and charcoal, and is safe and non-toxic. This kit contains all the parts and materials needed to create a salt-water powered robot. Detailed assembly instructions included. Recommended for ages 8 years and up.

From the Manufacturer

Build your own racer with our 4M Salt Water Power Robot Kit. Powered by using charcoal and salt water. Detailed instructions included. Award winning Green Science introduces kids to green concepts such as repurposing, upcycling and alternative energy.

Important information

Safety Information

Choking Hazard - Small Parts

To report an issue with this product or seller, click here.


From the manufacturer

4M SALT POWERED SCIENCE, 4M SCIENCE, 4M GREEN SCIENCE

About 4M

4M educational toys cover a wide range of subjects and include science kits, arts and crafts kits, robotics kits, and more. Each toy is creative, imaginative, inspiring--and most of all, fun! They encourage your child's inquisitive nature while teaching them to explore the world around them.

4M Green Science Salt Powered Robot

Learn about the fascinating world of green energy in a fun, hands-on way.

Challenge your child's imagination with the 4M Salt Water Powered Robot Kit. Perfect for any young scientist, this fun kit teaches robotics and the value of alternative energy sources. Once assembled, this robotic racer is powered by the safe, non-toxic chemical reaction of salt water and charcoal. Fostering creativity and mechanical skill, this kit also provides an excellent opportunity to show kids how toys are assembled and function.

  • Explore the fascinating world of green science
  • This set includes necessary components, accessories, and easy-to-follow instructions.
  • Kids can assemble an exciting moving robot that they'll be proud of
  • Helps teach children creativity, mechanical principles, and the value of alternative energy
  • Requires one Phillips head screwdriver, cup, table salt, spoon, and adult supervision
  • Recommended for ages 5 and up
  • Accredited by STEM.ORG the leader in credentialing of STEM toys, games and educational resources.

salt powered robot parts

salt powered robot, 4m science kits

GREEN SCIENCE, 4M GREEN SCIENCE

Explore the World of Green Energy

Includes robot parts, salt-powered battery and detailed instructions.

Science of a Toy

Build a racer and watch it go using only charcoal and salt water.

Better Together

What's better than one project? How about an afternoon of them? Mix 4M Green Science Kits and provide hours of enrichment through discovery, collecting, and play.

awards, STEM, STEM Toys, 4M, Science Toys, Science Kits STEAM

The 4M Brand is Recognized by STEM.org as a STEM Authenticated Brand

STEM.org is the longest continually-operating, privately held STEM education research and credentialing organization in America. Since 2001, its leadership has assisted with key initiatives that have been critical to the overall growth and proliferation of the movement, including early work on the 2005 STEM Congressional Caucus. Its team demonstrates the best in pedagogics / andragogics, supporting the world’s top brands, organizations and thousands of educators globally.

4m wind turbine, 4m robots 4M Salt Powered Robot, 4m green science 4M weather science WINDMILL GENERATOR, 4M GREEN SCIENCE 4M solar system
4M Green Science Wind Turbine 4M Green Science Salt Powered Robot 4M Green Science Weather Science 4M Green Science Windmill Generator 4M Green Science Solar System
Customer Reviews
4.3 out of 5 stars
4,120
4.3 out of 5 stars
4,120
4.3 out of 5 stars
4,120
4.3 out of 5 stars
4,120
4.4 out of 5 stars
3,806
Teaches Scientific Principles
Requires Assembly
Detailed Instructions Included
Batteries Required NO NO NO NO One AAA Battery (not included)
Recommended Age Ages 5 and Up Ages 5 and Up Ages 5 and Up Ages 5 and Up Ages 5 and Up

What's in the box

  • All parts to build a salt-powered robot, except table salt and spoon
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.3 out of 5 stars
    4.3 out of 5
    4,120 global ratings

    Customers say

    Customers like the entertainment value, coolness and ease of assembly of the science fundamentals kit. They mention that its a great kit just for fun, the instructions are easy to follow and its like a cool mini lego set. That said, some complain about the flexibility. Customers also dislike size. Customers disagree on quality, performance, and value.

    AI-generated from the text of customer reviews

    153 customers mention150 positive3 negative

    Customers find the entertainment value of the science fundamentals kit to be great. They mention that it is a great project just for fun, or it can be used to explain simple circuits. Some say that it's a useful set for teaching chemistry in a microscale way, and that it keeps young scientists occupied for a while. Overall, customers are satisfied with the entertainment and learning value of this kit.

    "...My daughter used it for her science project and it was very fun for her to do and she assemble it herself with my guidance to explain the..." Read more

    "...put together, easy for the 9 year old boy to figure out, but challenging enough for fun - and it was SUPER FAST when the water was added...." Read more

    "...It's a good escapist project for an adult, and very reasonably priced...." Read more

    "...It is a cool visual for kids to learn from." Read more

    97 customers mention71 positive26 negative

    Customers find the ease of assembly of the science fundamentals kit to be a great. They mention that the instructions are easy to follow, and the explanations are great. The kit is fun to put together, and it makes the project so much simpler. The science is clear to understand, and there is a form to fill out on the back of the kit.

    "...When it came down to doing the actual experiment, the instructions were simple and easy to follow...." Read more

    "...from Dad on later install - he said it was fun to put together, easy for the 9 year old boy to figure out, but challenging enough for fun - and it..." Read more

    "...Glad we went with this one. Easy to assemble just wish it was a little better quality. Took quite a bit to get the screws tightened." Read more

    "So we homeschool and we used this as a science project. The instructions where bad but we figured it out without them...." Read more

    30 customers mention30 positive0 negative

    Customers are impressed with the coolness of the science fundamentals kit. They mention that it's a great presentation piece, a cute project set for kids, and the filtration is well designed.

    "...The filtration was well designed, easy to observe and quite effective; we watched it for several hours as it procuced a teaspoon of filtered water,..." Read more

    "This looks well and the light inside will light up when the mill is turned fast, either by hand or by wind...." Read more

    "...It is like a cool mini lego set. But nothing more. At least they could have include more info about salt water." Read more

    "Very cute toy! It is very tiny though- but so cute. Stands maybe 2" tall, tops. It's made out of plastic pieces, not metal...." Read more

    126 customers mention48 positive78 negative

    Customers are mixed about the quality of the science fundamentals kit. Some mention that it's well-made, easy to assemble, and comes with clear instructions. However, others say that it is a bunch of flimsy plastic pieces that break easily after a couple of days of light use. The gears and other parts look a little frail, and won't survive a category 2 hurricane.

    "...glass container as a collector as they suggested because it was too flimsy when my daughter used a plastic cup and needed to add a support cup as..." Read more

    "Buy! It’s so good and a great science project" Read more

    "...Glad we went with this one. Easy to assemble just wish it was a little better quality. Took quite a bit to get the screws tightened." Read more

    "It's a bunch of flimsy plastic pieces, and the experiments don't work that well...." Read more

    121 customers mention44 positive77 negative

    Customers are mixed about the performance of the science fundamentals kit. Some mention it works very well for what it's designed to do, while others say that it doesn't work well at all, the thermometer never worked, the small fans will not work, and the robot didn't maneuver well.

    "...Very disappointing and I would not recommend. I don’t think we will try other kits because this one was such a fail." Read more

    "...Although this was given as a gift, it would also work well for any homeschool, private or public school science curriculum...." Read more

    "...The cloud maker barely works at all (we tried quite a few times, and it was almost noticeable twice)...." Read more

    "The robot did not work. I triple-checked the instructions and tried with other battery, tried adding more salt… nothing...." Read more

    71 customers mention28 positive43 negative

    Customers are mixed about the value of the science fundamentals kit. Some mention that the LED light came on was worth any price, while others say that it definitely did not feel like value for money. Some say that the parts out of the box for the kit seems a little cheap. Overall, the opinions are mixed, and it's recommended to read the reviews carefully before making a purchase.

    "...Seemed more like a dollar store item. It worked fine, but maybe a little overpriced." Read more

    "...end, definitely an excellent product for learning and and the price is very reasonable...." Read more

    "...So it definitely did not feel like value for money. Disappointing." Read more

    "...At the price I paid, it's not worth it at all." Read more

    55 customers mention11 positive44 negative

    Customers are dissatisfied with the size of the robot. They mention that the rain guage is too small to really collect any water, the water bottle was loose and didn't fit an ordinary bottle, and the robot is less than 2 inches tall. The diameter of the propeller is not so large, making it difficult to move on its own with wind.

    "...the plastic to get the gears to touch but the whole thing is too tight at the propeller and does not move at all. It was very windy today too...." Read more

    "Like other reviewers have said - this product is quite small. We figured it would be, but it definitely is SMALL...." Read more

    "Not as cool as I thought it would be. Very small. Seemed more like a dollar store item. It worked fine, but maybe a little overpriced." Read more

    "...The robot is small and pretty simple to assemble...." Read more

    29 customers mention0 positive29 negative

    Customers are dissatisfied with the flexibility of the windmill. They mention that the wind vanes do not move freely, the construction is too tight, and it does not reorient with the wind. The motor has decent RPM, but it has absolutely no torque, so any tiny little movement does not power the wind turbine.

    "...It did not work at all. The gears would not even touch when put all together but I was able to put a shim in the motor part between the plastic to..." Read more

    "...The motor has decent RPM, but absolutely no torque, so any tiny little hinderance, like a partial grain of salt in the gears, stops it...." Read more

    "...They also need a lot of wind to make the lightbulbs work, so have a good portable fan or blowdryer handy...." Read more

    "...Unless you expose it to a tornado, the windmill has too much friction to spin fast enough to power the LED..." Read more

    2 things to watch out for during assembly to make it work great!
    4 Stars
    2 things to watch out for during assembly to make it work great!
    I received this today in our RND Lab and assembled it right away. Had 2 issues that once corrected, the unit works just fine.1st, they provide a detailed instruction sheet and it is simple to follow. They "clearly" show the RED wire at the bottom right rear and the BLACK on the other terminal. After assembly the light would not light up. As an engineer, I immediately started trouble shooting and found that if it was spun backwards the LED would light up. Of course being thorough (they recommend twisting the wires which I just can't live with), had to "de-solder" and then re solder the wires to the opposite terminals. Using our shop air compressor system and 40 PSI the LED lit very brightly.2nd, the bottle cap adapter that they recommend adding oil to is molded with too high of a tolerance. To fix this problem, I sanded the very top edge until it was smooth (there is a very definite ridge ring that can be felt around it that is unnecessary). After that it easily spun around as it should.I've added a picture showing the 2 steps above.So, in the end, definitely an excellent product for learning and and the price is very reasonable. If it hadn't been for the extra work it would have been given it all 5 stars.
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    Top reviews from the United States

    Reviewed in the United States on March 17, 2019
    Style: Clean Water ScienceVerified Purchase
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    5.0 out of 5 stars Works well but smaller scale
    Reviewed in the United States on March 17, 2019
    We have tested this product with both the suggested dirty water and water colored with food coloring and it worked on both cases. It should be noted however that the filtering materials are vert small quantities, so using a big amount of water dirt or colors will make it less efficient faster. I would suggest to do the test with small amounts, I think 50 ml is more the enough to demonstrate the principle. For the dyed water I ended up using only 20 ml.
    My daughter used it for her science project and it was very fun for her to do and she assemble it herself with my guidance to explain the instructions. She is first grade so I do not think it is very challenging bu fun and educating to observe.
    I added a video of the assembly and the final product and function. I would suggest to use a heavy glass container as a collector as they suggested because it was too flimsy when my daughter used a plastic cup and needed to add a support cup as seen in the end of the video.
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