4MGreen Science: Potato Clock - DIY & Experience Battery-Free Renewable Energy, Power A Digital Clock, STEM Learning Craft Activity Kit, Kids Age 5+

It was a great science project for me & my grandson.We got into a lot of discussions about electric power for homes - what would be be like to power every light in the house with a bunch of potatoes in series, always changing the potatoes when they spoiled.

Really nice set. Be careful with the zink items they bend a bit if you hold them from the top. It worked in 5-6 solutions. Tested them with a voltmeter for a science fair.

Fun to build with the kids, but it breaks easily............still, time well spent

my son and I had a blast with this... have fun making a colorful base for the clock to sit on - great afternoon project!

this was a science projects for my kids and they loved it and it still works with multiply uses I highly recommend it

I am giving 4 stars because it works, but any potential buyer needs to know that this price is ridiculous. These can be bought in a toy store for around 15.00 to 20.00.