Got a problem with my battery charger - it's not charging. Trying to check the fuse as a first port of call but I can't find one in the charging circuit. There is one on the fuse board under the seat (next to the trips) that says battery but it seems to be for the 12v appliances in the caravan from the battery (15amp). It's intact and the accessories all work fine. Just that the battery runs down over the space of a week or 2 (depending on how much I use it). The next question would be how do I get into the charging controller if the fuse is OK?