I recommend it as a powerful Power Bank with the ability to start a car in extreme situations. After frequent, but short trips, it didn’t start at just - 18. It started up easily from this device, for a test, and then again in the morning. After that, the device continued to glow fully charged. The 2.4 engine in the battery had less than 10 V.
To provide a more comprehensive review, I've attached some photos.