Thats how long the OEM Varta battery held out. I have had to put the trickle charger on it lately due to it sitting a lot with me working out of town. Finally decided to not push the luck any longer. Out with the original, in with the new, higher capacity, AGM battery. Got it through work so at least no mark up, still cost me $175!
Anyway here is the new, in all its glory
D2739E82-5CC0-495D-A770-26D08B5A1CFF-681-000000DEEDF88F7C_zps9e9cf100.jpg