After the first night frost, I had to start again with a completely empty battery, a new one must be here, even if the previous one is only 1.5 years old. The first owner had it changed after 2 years, even for a battery with 63AH. In itself strange enough. Nevertheless, last winter after every cold night I had at least the problem, that at the start of the traffic lights the radio went off briefly, until the first 20Km had driven, and thus the battery Often, however, not even the radio remote control went in the morning, so the battery was already empty after 1-2 days without driving. This mess has to be another! Which battery is best suited for the frequent stop/start intervals at traffic lights and the low generator power of the smart, who has tips for me? Thank you in advance!