4M Potato Clock Review

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Our 7 year old absolutely loves this clock! She is learning about energy provided by inanimate objects like potatoes. She has tried lemons and liquids with good results. Appropriate for a lesson that does not yell SCHOOL! Would be helpful for any child needing to learn to tell time.

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This was exactly what we needed. Actually we only needed the clock, but it was nice to have the whole kit. Directions from the internet made it clear that you needed a particular, low voltage / current clock and there is NOWHERE to find one. My husband is an electrical engineer and he spent days looking for one with no luck (other than trying to build one, but time did not permit that).

Directions were the same as the internet, connected the clock and it worked. Our son brought it in for his 2nd grade science project and was able to explain in "2nd grade terms" what was happening. I highly recommend this product.

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I needed a 1.5v clock for my son's science experiment. So I bought this product solely for the clock. It worked perfectly. The only knock on the item is the gauge of the wires from the clock to the power source are way too thin. Not sure the gauge, but they were significantly smaller that the smallest 20 gauge wire sold by the hardware store. We tested the 1.5v clock with a .8v battery, 1.4v battery and a 1.8v battery. The clock worked in every case! Great price and great fun!

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This simple classic demonstrates the building of a battery using nearly electrolyte source (tomatoe, potatoe, lemon, orange, apple, etc). The clock is of very low quality with poor switches and half the indicator segments were non-functional out of the box. This was readily repaired, but is typical of these low cost kits. Regardless, my son (6) and I had a good hour or two of fun together playing with this and demonstrating the principals.

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Of course my grandaughter had no clue about "potato clocks". But she was suitably amazed and it was a wonderful trip down memory lane for me!

The twisted wire connections felt fragile till I actually looked at the instructions and found out about the little pieces of tape that came with.

We wondered what we could accomplish if we put a hundred potatoes in series! ; )

Bottom line: a perfect, elegant little gift for a grandad to give.