JASTEK 300W Portable Power Supply Uninterruptible 220Wh Backup Power Station Generator 2 110V AC Outlets DC 12V 4 USB Ports Home Camping Travel CPAP Emergency - (Pure Sine Wave, Black)

I bought this generator to power my CPAP when camping. In fact I bought two. The first one shut down as soon as I plugged my CPAP into it. I liked the build quality of the device and figure I just got a bad one so I returned it for another. The second one was only marginally better. It would power up the CPAP and start the fan working but shut down as soon as I took a breath. I did not discover that till I was already at the camp site. The CPAP draws 1.0 amp. The 12v out on the JASTEK is rated at 10 amps. So I did not exceed the operating constraints of the battery. This is simply a design flaw in the 12v circuitry that regulates the 12v out.Also, the JASTEK would not charge my Samsung phone to 100% even after charing overnight. The best I got was 94%. My $15 external battery for my phone got it to 100%! How come the $220 battery couldn't? Another design flaw?Keep in mind that I tried 2 of these and BOTH failed. DON'T BUY THIS DEVICE!

Shipping fast and packaged well. Very easy to use. I work from home from time to time and my laptop needs to run hours continuously. A back up charger is necessary in case any blackout.This product is great for me and it is not as heavy as the one in my office. Plus, we can carry it when we camping outside in the coming holidays.Nice design and good quality. Highly recommended.

Allows me to charge many things but I primarily use to power a rice cooker while on the road....love it ...only wish it had a higher mah but does what I need it to do