The supply and battery power were initially good. After 7 months but the battery was defective, acid goes to the positive pole of. The ADAC has tested the battery, and reported as defective. ADAC document and a photo of expiring battery I have sent to batterie24 with the question of warranty or replacement. The service is fast and friendly, but a straightforward exchange is not possible in spite of the ADAC investigation. It will be offered a test that is so time consuming, that you can not go into it, and thus obtained defacto no guarantee. (To pick up you have to keep to a day prepared, there is no temporary Leihbatterie, so the car would be useless for days).
Bottom line, I can only warn against an order because 1. I have a defective product and 2. the conditions to take a warranty service (intentionally?) Unrealistic.