Homemade rechargeable battery---dissected after load testing

3,213 views · Published 3 September 2012 · 5:18 · Indexed 23 October 2026

Channel: Lidmotor · 2012 · Science & Technology

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This shows my homemade rechargeable "solder battery" dissected after being load tested for several days. The cell still functions perfectly but a dark redish brown oxide deposit did fall off the positive electrode after severe complete discharging from a fully charged state.  The electrodes are still good and I show them producing power even just sitting on a wet paper towel.  The electrolyte used was food grade Alum and distilled water.  The cell was "conditioned" by charging with 3v to 6v DC and then discharging through a 1 to 30mA load.  This took several cycles before the cell became fully formed up.  The cell's low grade electrical solder then takes on the two color appearance that I show in this video.

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