Gidday we have our March 2013 XC3 under cover and have not used it for about 3 months (after a 40K 9 month jaunt). i noticed the batteries were dropping and have connected to mains power for recharge. After 36 hrs, they have only recharged to about 86%. i would expect them to be fully charged by now. Is this an indication of almost dead batteries? Thanks Ian Yarham