Hey Sessantanove, that is indeed the case. Galaxus does not give a guarantee on car batteries. Galaxus writes that a battery is a consumable item (probably similar to a bar of soap) and therefore no guarantee can be given. (In principle, however, there should not be a problem, and a reasonable car battery also lasts at least 5-7 years absolutely flawlessly). What the Varta doesn't like at all is deep discharges... so always make sure that there is some juice in the battery. Best wishes and have a good trip