Banners get a lot of bad press. I had my first 7 for 8 years, it was 11 years old when I sold it,still on it original battery. Current 7 is 7 years old and original battery, yep it's a banner. Look after it, it will last. Car is always isolated on red key and put on a ctek 0.8a conditioner for weeks at a time, keep an eye on battery fluid levels regularly