Here is a portable power station that doubles as a loud speaker. The Outmax Portable Power Station has 1120Wh capacity. This 1200W power station can handle a wide variety of appliances. You can use this as a UPS solution. It has a 10ms switch-over time. This power station can be charged with your car or a solar panel.
The Outmax Portable Power Station has a smart BMS built-in. Its battery is good for over 3000 cycles.
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