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How to make battery eliminators
Turn the device off, and remove the battery cells.
Recharge or properly dispose of them.
Cut wood dowels into the right size for the battery you're replacing.
1/2 " diameter dowel rod will work for aa cells, and 1.25 " dowel for d cells. Cut the dowels to about the length of the cell not counting the protruding (+) tip; that will be provided using a screw.