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The best power bank I've ever owned! It's powerful, charges quickly, and can charge a lot of devices with different power levels, all at the same time. I've paired it with a portable, foldable 28W solar panel from BigBlue that I bought elsewhere online, to have some energy autonomy mainly for light and our phones in case of long trips, camping, vacations, etc. This power bank gives the best performance compared to the others I own. In fact, when connected to the solar panel, it stores a little more than twice what some of my other batteries are able to do! The electronic management and quality of this power bank needs no further proof—Xstorm seems to be an extremely competent brand in this field! Yes, the price is higher than for other power banks, but I think it's well justified! The display that shows the exact percentage of available energy is a real plus for a battery of this size! The day I need to buy another, either this size or smaller, or another model, I'll definitely go with Xstorm! Another important detail: I found it cheapest on Military.eu! A superb discovery, thoroughly tested over 3 days, and fully approved!
