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Dummy AA Cell (with Nickel Strip Terminal)
Dummy AA Cell (with Nickel Strip Terminal)Gadget
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Replace two alkaline AA cells in your gadgets with one LiFePO4 cell and one of these dummy cells. The ends are connected together with a short piece of 4-mm nickel strip put in place during the print. I have a label printer that takes six, and it didn't like it when I tried running it on NiMH rechargeables (only 7.2V output vs. 9.0V for alkaline). 9.6V from three LiFePO4 cells will be a little bit high, but shouldn't be dangerously so.
Materials and methods
Print Dummy_Battery_AA_slots.stl in whatever quantity you want. Insert a pause (M125, if your printer uses Marlin) at the top of each slot so you can (1) insert a 4-mm nickel strip about an inch longer than the adapter body and (2) bend the loose end around.
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