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From essential phone charging to full-home backup, this guide compares the best portable power stations for emergencies - by size, features, runtime, and expandability. Learn more. Versatile Power Source: This portable backup battery power supply allows you to charge up to 9 devices. It comes with an 110W wireless charging pad, LED flashlight, 3 USB-A ports (7. 2A shared), 60W USB-C port, 2 AC outlets, 12V DC output, and a 12V car port.
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