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This product adopts integrated design, easy to use, easy to install. Effectively save installation time and cost. Small and stylish design. This product has a variety of built-in working modes. Whether as a primary power source in areas without power, or as a backup power source in areas with unstable power, the system can respond flexibly.link:https://www.sunnewbattery.com/solar-energy-storage-battery/20-wkh-three-phase-multifunction-battery.html