Webetop 155Wh 42000mAh Portable Generator Inverter Battery 100W Camping Emergency Home Use UPS Power Source Charged by Solar Panel/Wall Car with 110V AC Outlet,3 DC 12V,3 USB Port

I'm going to start with the products packaging, which some might feel is a trivial thing, but for an occasional use item its not so trivial. This product, which weighs in at a little over 5 pounds, comes in a box that is both easily opened and easily closed again - all without ripping the box apart. On top is a sturdy nylon carry handle, making the transport of the generator very easy to accomplish.Upon opening the box the User Guide - the instructions - are immediately available. The instructions themselves are both easy to follow and easy to understand. Perhaps the most important point they make is that the generator is not intended as a permanent power source, but only as a temporary stand-by power source for use in short term situations, such as power outages, overnight camping trips, day picnics, etc. .While the unit apparently came fully charged, I decided not to take any chances and plugged it in using the included AC wall adapter / charger (it also comes with a 12V car adapter / charger). It only took a few minutes to determine that the unit was in fact fully charged. First test was the built-in flashlight. This was, as promised, very bright, strong and unwavering. A single switch click sent to a signaling strobe light was very effective.The second test dealt with my computer systems. My setup is this: I have one main computer that is plugged into an AC wall outlet, which in turn is backed up by high end laptop computer capable of reproducing all of the main computers functions, speed, and in fact goes one better by having its main drive being a solid state drive as opposed to my main computers physical hard drive. Both computers however rely upon a hard wire Ethernet connection for internet and cloud access. So for this test, I unplugged the system modem and waited for the system to go down, which it did in short order. I then plugged the modem into the power generator and waited. . . . . . . it didn't take very long before the modem's lights were flashing, signaling it was making connections, first on its default settings, and then on my dedicated network settings.The third test involved the dedicated USB port hook up. A simple test really - I have flexible head plug-in lights for lighting up my keyboards, and I simply plugged one of these and let it run for awhile. As I expected, it ran without a problem at full brightness, and when I tried it back on my laptop, it ran completely normally again without any sign of damage or problem. A fourth item was similarly tested using a plug-in 60 watt desk lamp, which took only a few seconds to verify that it worked when plugged into the end of the generator.The uses of this generator are many. A friend of mine was very interested in getting one as she was unaware that a standby generator based upon a lithium battery option was available. And the condo where she lives does not allow gas-fueled generators to be stored / used indoors. She loses power quite frequently in the rural area that she lives in, and thus has no way to power her phone service in an emergency. Another friend enjoys going camping on long weekends, and the ability to have a portable power supply to provide lights, up to date weather forecasts, radio music, and the like would certainly add to their enjoyment of their weekend. And these are just two of the varied uses of this power supply.

I purchased this portable battery so I could go camping and still use my CPAP. I car camp, so outside of my vehicle battery, I don't have access to power. I refuse to use my vehicle battery for anything but minor usage (dome light in the night, cell phone maybe ), and I liked the ability to charge this with solar power, the multiple ports this battery offered (DC, USB, 5.5mm, cigarette lighter) in addition to the flashlight and light weight. I don't know anything about Wh, mAH, watts, amps, volts, etc. I relied quite heavily on other reviews on this battery, other batteries and solar chargers before choosing this battery. In addition to the features, price was also a factor in my choice.This powers my Airsense 10 CPAP machine wonderfully. I have used it for two nights at home before I trek off for a week-long camping trip. I only get one night of use from the battery. That's based on approximately 7 to 8 hours of running time. I have not used the humidifier and I am using the 5.5mm output jack (not DC). This does require purchasing an adapter for the CPAP.I suspect the running time is due to the size of the battery. It was not completely depleted after 7 to 8 hours of usage, but I only had one bar left on the power gauge. Were I willing to pay more for a bigger battery, I would probably get more running time.Regarding solar charging, I have charged it with solar power using the Paxcess 50w solar panel. The first day was partly cloudy, and after having it outdoors for over 9 hours, I only had 3 bars. Needless to say, it did not power my CPAP for the entire night. The second day was cloudless and I got a full charge in 9 hours. I don't know if the charging time is due to the solar panel, the battery, or both. The length of time to charge and the importance of a clear sky are the only criticisms I have. For a weekend camping trip, the Webetop will serve me just fine. If I take many long camping trips (more than three nights) I will probably look into something else because setting it out to charge every day, early enough in the day, and the inevitable clouds, will make charging it a hassle day after day after day.To sum up: Nice, lightweight, small footprint battery, but solar charging will be a problem on long outings.UPDATE AFTER CAMPING TRIP;This batter lasts for two nights running my CPAP for approximately 7 hours per night I think it was not fully charged when it arrived, despite the battery indicator showing four bars. I'm quite happy with two night's of use for a battery this size.