Any suggestions appreciated.While back went out for the weekend and plugged into mains on a site.flicked the switch to power the 12 volt stuff,interior lights etc,nothing! battery indicator on panel showed no reading so battery flat.Thought either bad battery or Zig not charging ,didn't know how old the battery was so decided to buy a new one,so fitted a 110 amp new one as this was cheaper than new Zig,and though it prudent to change it anyway.Went off for another weekend everything fine.Went away this weekend same problem,so thought the Zig must be Kaput,but couldn't understand why new battery had gone flat as only been out on the previous mentioned.Anyway decided to leave the charging swiitch on this weekend anyway and after 2 days the indicator on the panel was showing about 1/4 charge and the lights worked so assume the there is some charging going on so maybe the zig is okay?will charge the battery up fully again at home but puzzled.As an aside would it be possible to use my battery charger I have at home instead of the Zig in the motorhome? it is one of these intelligent types not a cheap thing. Thanks for any inputs