2022 - Volume #46, Issue #1, Page #35
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Cordless Tools Converted To Run On Car Battery
“The batteries on my Hitachi 18-volt drill and my 12-volt sawzall would no longer take a charge, even though I hadn’t used either tool very much. After checking out the cost of replacement batteries, I decided to convert both tools to operate off the 12-volt battery on any vehicle,” says Charles Kunau, Bellevue, Iowa. “I got rid of the batteries, then cut off both ends of a 20-ft. long extension cord. I attached a pair of female spade connectors to one end and then hooked up to the male connectors on the tool battery.”
At the other end of the extension cord, he attached battery clamps that hook up to the vehicle’s battery.
“Now I have power wherever I go, and I don’t have to worry about rechargeable batteries going dead,” says Kunau. “People are often surprised that a 12-volt car battery has enough power to operate an 18-volt tool, but it does. That’s because the 12-volt battery on a vehicle has much higher amperage than an 18-volt battery on a cordless tool, and therefore produces more power per volt,” notes Kunau.
Contact: FARM SHOW Followup, Charles Kunau, 32909 320th St., Bellevue, Iowa 52031 (charliekunau@hotmail.com).
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