Outdoor lithium-ion batteries Rechargeable Lithium-ion outdoor 220V 110V portable energy storage battery 300w Energy storage power supply is a large-capacity mobile power supply, which is a machine that can store electrical energy. Its working principle is AC 220V output, which can drive a low-power rice cooker, cook rice, make coffee with a coffee machine, for lighting, use a power outlet, and charge various electrical appliances. It not only has all the functions of online UPS, provides stable power protection for critical loads, optimizes UPS performance, and reasonably saves oil pumps, reactive power compensation equipment and voltage regulator equipment.