Download: Cement batteries doing work.ASF
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This is more work with the cement battery idea. I show five of them here doing different things. I made a very small one using a plastic jar lid that I am calling the "Lidbattery". I show it here powering one of the "Lucky Waving Cat" drive units. I also show the "coil shorting" idea to get a back spike off a generator coil and light an Led.