Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make battery eliminators [title] Turn the device off, and remove the battery cells. [step] Recharge or properly dispose of them. [title] Cut wood dowels into the right size for the battery you're replacing.

Ending1: [title] Place the wood pieces in a liquid nitrate or ammonia solution. [step] Once water is dissolved, place the wood pieces in a power source that is at least 75 ° f (24 ° c). Ending2: [step] Cut an x into the dowels so that each length will be equal in diameter. This will allow each panel to be in a similar proportion. Ending3: [step] You can also use cardboard and cut the dowels to fit. [title] Cut three 4-foot (15-meter) square or two 4-foot (15-meter) square rounds out of plywood and metal 6/8 " (1/16 ") thick. Ending4: [step] 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.

Answer format: ending1/ending2/ending3/ending4