I also suggest you haul the sap home to process. I am quite familiar with batteries having 2 solar systems, one just battery connected, with over $4,000 worth of batteries, and another at my sugarhouse that is 6.32 KW, grid tied, of that 1.48 KW is on a $2500 battery bank. Batteries will be the expensive portion of that investment, but if you decide you need the battery power, do not use a car battery, they are designed to give high power for a short time, you need one made for long term power, but fewer amps surge. For that either get a good quality deep cycle battery or a solar battery, then be ready to haul a very heavy battery to be recharged routinely.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.