It’s been cold and the Q7 hasn’t been driven for a while, the battery drops to 11.4V, I need to charge it. I’ve bought a really good charger from Schumacher SC1280 with 15A capacity. The Q7 battery is under the driver seat, therefore, there are two poles (terminals) marked red for positive and “-” on the side of the fender for jumper and charging cables. I would put the clamps on first before plugging in the charger and turn it on. Monitor to make sure it doesn’t go pass 95%. Measure the voltage after charging to make sure it’s good and holding over 12.4V. The charger has the AGM option, so make sure to select if your battery is original AGM.