My tractor wouldn't start so I brought the battery to John Deere, they tested the battery and said the cells are good and it works fine, they recommended other services, but I declined and came home to ask my neighbor (lawn tractor mechanic). He said the engine was seized due to running on barely any oil, he was right about the oil, and recommended a new engine. I bought a battery load tester, the volts ran good but the load detected a zero reading. I asked John Deere if the mower should start with a zero load, and they didn't provide any info, said they couldn't diagnose over the phone. My neighbor mechanic said the battery ran good until the mower seized, so battery should be good and the volts test good.
I know I need a new battery, but with a zero load detection could this in fact cause the mower to not have any response even-though the volts test good?