I am very pleased with the device! Despite minor shortcomings, I think that it fulfills its main purpose completely. Well, how long it will last - time will tell. Pros below: The main purpose of the device performs perfectly. Although there were no serious frosts yet, it turned out that already at 10-12 degrees of frost, my Octavia School refused to turn the engine (the battery has been 10 years old). With the help of a booster, the engine started up with half a turn. The charge indicator on the booster remained at 100% charge (after purchase it showed 75%). Almost a week later I had to use it again - the result is the same! Fast charging works, as stated, both to charge the device itself and to charge a smartphone from it. Some cons: The mains charger included in the kit is decently warm, but I can use my smartphone charger. I also tried to connect a car inverter to the included 12 volt cigarette lighter socket in order to get 220 volts of alternating voltage at the output to power low-power devices, but the protection on the booster worked, although I did not connect the load to the inverter. I think that this is due to the fact that the inverter has too much starting current.
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