Wow! I lost my first CB at 54.9 AH too! But only at 8000/8 mos. (Dec.). Then a few months later, my AH went to 56.9! Now it's dropped to 56.1. However, compared to my 2011, my BC is at 86% vs. less than 80% so I still can go 100 miles city and 100 miles freeway at 55 mph actual (58 on speedo.