I bought this particular unit because it has an airplane plug to charge my Aimtom 300W solar power station. Most devices do not have this special plug. I also like the form factor. For a 100 watt device, it is larger than for 60 watt devices, but smaller than some other 100 watt devices. I had an issue with the red LED being hard to see, but I spoke to support and they responded quickly. They solved the problem by offering me a small discount on the device. I live in Michigan's Upper Peninsula and it's winter. It quickly charged my phone from the USB port on a bright, sunny day, and the output voltage from the DC port was 26.2 volts. Overall I am satisfied with this device.
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