After a lot of searching in general on foreign sites, I found that there isn't a single negative review anywhere. This made me investigate it even more and I discovered that this particular type has been circulating for the last 5 years without any issues. It also has a starting current of 2000 amps and for its price, it is incredibly value for money. There are videos on YouTube from Russia showing it starting tractors in the snow... I work in roadside assistance and I got it the other day; so far I have jump-started a diesel Range Rover and a Fiat Panda, they both started immediately, as we say, and the level is at 100%. I will come back in about a month for a complete conclusion.