Well I'm not sure, but after blowing snow the last blizzard for a few hours with the headlights on- when I shut the tractor off to clear a clog- it would barely turn over. When I turned the lights off, it held a charge just fine. I don't think LED's would hurt in any case.
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1973 Cub Cadet 149
2023 John Deere X590
Farmall B sitting in relative's barn
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