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Dummy AA Cell (with Nickel Strip Terminal)
Dummy AA Cell (with Nickel Strip Terminal)
Gadget
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Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.
Attribution
Description
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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Comments
salfter published this design ago