Has anyone added a battery to a 1025 or similar? I run some LED lights to work in the yard. I leave the tractor running when I would rather not to keep the battery from getting drained. I'm pulling around 70 watts (probably more) with everything on. I'd like to route my external lights to a deep-discharge battery and not wear on my tractor one. The lights are set up to just plug into the power outlet but I'd add a couple lights and a nicer switch if I add another battery. I could potentially run the lights for several hours.