Hutchison cell version 2 is still powering the LED nice and bright in the garage. I check the milliamps at irregular times throughout the day, and its been holding above 2.5 mA (under load) for longer than 24 hours. This has really impressed me and if it continues to hold above this level for longer than a week Im certainly going to buy a much bigger bag of Rochelle salts and get some other variations going.
Thats a nice looking star cell! Thanks for the clear computer graphics showing how this cell can continue hold its output for so long. Im looking forward to your next battery installment