Bought to start the car in the cold (eng. 1.6l). This task can not cope due to the small capacity of the device. (10 times less than the declared value). This is a complete scam. Do not buy this device, do not waste your money. With its pros: Charges the phone. At the end of charging, it turns off the power supply to the phone, i. E. charging is safe. Cons below: Nontbuk from it works no more than half an hour. With the declared capacity of the built-in battery - 14000 mAh, the laptop must work for at least a day. To understand what's going on, I measured the actual capacity of the battery. It turned out that a fully charged "launcher" gives out only 1860 mAh. With such a capacity, starting a car, and even with a dead battery, is pure utopia.