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Its a theory but if the 12volt battery has a low voltage the computer senses this as it needs charging. As a result the DC to DC converter is running more frequently to charge the 12volt battery. The 144volt pack will then need more hidden charging from the gas engine. This increased load on the engine would then keep you from getting lean burn as often. I put a hawker battery in last year and its voltage is low so I might be changing mine as well. I can measure the 12volt system but not the 144volt system so I can prove none of the above but I do see more frequent 13.8 volt readings than I did a year ago. (If the headlights are on it stays at 13.8 volts whereas last year I would see it cycle. Have fun, RIck
