The device has now (almost) survived the first winter and several times helped us out of a jam. Due to a lot of short-haul operation the battery (44Ah) was our car several times empty and we were able to help with the equipment very well! The time now is always fully charged ready for use behind the driver's seat. The perceived quality is quite Gandhi. The compressor can be used only for bicycle tires (only small volumes) or scooter tire. A car tire is from the air flow forth a bit large. In addition, the operating noise of the compressor is very noisy. Another drawback is that thick cable may have somewhat short. Therefore, one can not stand up the unit in the engine compartment somewhere, but should be as this will have a second person who holds the device during startup. If the built-in battery times gives up the ghost, they can be relatively easily replace with a new one. The unit as a whole is ok. For the price anyway. I would buy it again!