Portable Hand Crank Emergency USB Charger - 2000mAh Power Bank for Phones, Flashlights & Small Devices - Survival Gear for Camping, Hiking & Outdoor Emergencies (No Car Charging)

I was skeptical because of the number of different listings for this product by various "alphabet companies", but out of curiosity I bought one anyway... and I ended up buying another before making this review. The first one I bought was with vehicle charging, the second one was without.I had previously broken another hand crank generator before I even got to stress testing it, but on both of these I couldn't manage to break anything electronic. However on the second one the hand crank wasn't gripping the exposed axle tight enough, causing it to slip. This wouldn't have happened at all if the hand crank had the correct operator. I don't know what it is called exactly, but you can see what I'm talking about in the photos. It's effectively a round surface gripping another round surface by friction alone. I fixed this by wedging some brass in there to couple with the flat part of the axle. If this is a deal breaker for you then I recommended not buying, but personally it took me all of twenty minutes with a Leatherman and some spent casings to fix it.Other than that and a few nitpicks I have nothing but good things to say.All of the output voltages were what you would expect, except for the 220v part. This is the first nitpick because I don't think this was out of dishonesty I think it's just a misunderstanding. The US electric grid is 110/220v, but 220v is only used for large appliances like driers and ovens, and there is no way you could run something like that with a portable generator. Unsurprisingly, I couldn't find a 220v reading any way I read the outlet.The outlet is some kind of universal outlet, I don't know what all will plug into it but normal US plugs will.I didn't test whether you could charge a car battery with the "vehicle charging" terminals, but essentially they are just the output voltage of the battery, so at 12.6v on a full charge it should work. If you do decide to do this disconnect the device before starting the car. I don't know for sure but I don't think a lithium ion battery would like that very much. The only other thing to say about these terminals is that they are always on (as is the 12vdc output on the side). A little of the metal on both of the terminals are exposed which makes me worried about accidently shorting them, so I put a piece of rubber around the positive one for now. That's the second nitpick.The first one I bought came with two spare fuses, the second only had one. They are F20AL250V if you want to get spares, but I couldn't manage to blow one when stress testing. Removing the fuse disconnects the USB and 110vac outputs, the flashlight, and the generator from the battery. It does not disable the 12vdc output or the vehicle charging terminals, so be carful with those. Also, if the fuse is removed or blown the hand crank will be much easier to spin, and this may damage the generator.The fuses tuck away nicely in the screw holes on the back if you roll them up in the bag.Finally, there is another protective device that works for the 110vac and 12vdc outputs and maybe other functions, I'm not sure. It cuts the device off and then back on a few seconds later. I found this when I tried running a vacuum on the 110vac outlet and when I accidently shorted the 12vdc output.