I have owned my C4 grand picasso 1.6 hdi exclusive since new 2009, and the battery has served me well, but now it doesn't hold a charge for very long possibly because I don't do any decent runs and the wipers and lights are on. Now my question is> is it easy to dismantle the fuse carrier arrangement on the top of the battery, there is no infor; in my handbook except for a fuse layout diagram, also any recommendations as to A/H size and dimensions before hand many thanks in advance