So was looking at these battery's http://www.powerwholesale.net/catl-...rgeable-solar-battery-with-busbar-p-3838.html and unsure of what mppt to use thinking 6kw+ or better , currently no solar yet but may install some so will just use my power company to charge. I recently upgraded my generator to 12kw and installed a 250 gal propane bottle in hopes I could charge a battery bank when the power goes down. Mostly suppling power to 2 refrigerators and some lighting and a window ac or space heater depending on needs. Needing a 220vac output system, cost is important but not the cheap stuff. Very open to suggestions the experts feel the best setup would be. Thanks for the help
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