Guess TC really using some lousy batch of batteries. I hv changed mine 1st time at 11mths ++ (luckily b4 i yr warranty), got it FOC. Sense the starting cranking was very slow/weak, immediately sent to TC to get it checked and replaced. Somemore they replaced for me a Maintenance Free Batt. Used that for less than 1 1/2 yr, died on me also in carpark. MFB also no use 1, somemre the indicator stil show batt good, so dont trust the indicator too much. Asked for TC tow-truck service, they came and changed for me a normal batt for ~$70++. Then changed my 3rd batt last mth, luckily also 11mths++ (left 1 wk only b4 1 yr), also drove to TC and managed to get it replaced FOC. U can c I hv changed 3 times at TC, all died so early.. haiz.. dont know tis 4th batt can last me more than 1 yr or not.