Jumpstart impossible performance of the device is not enough ...

Last winter was my vehicle (VW Touran 2.0 TDI 125 kW / Automatic) week at -20 ° in a parking lot and jumped to only start the vehicle using a foreign car. So I was looking for an alternative, to be prepared in the future for such cases.
The choice was made after intensive research on the net and including the survey of TÜV experts on this unit because I was discouraged from the outset of the "DIY equipment".

And now the facts:

- Device fully charged

- Start aid to simulated Batterientleerung and 10 ° outdoor temperature is not possible !!!!

- The electronics in the vehicle 'wake up' again though, but the power of the device is not sufficient to start the engine

Conclusion:

- Unusable as a jumpstart for the remaining functions (compressor / light) there are cheaper alternatives