I went to collect my motorhome out of storage to give it a wash and brushup. I last used it in november . I had a flat battery.being new to motorhoming i didnt realise that an unused battery runs down . Ive read about small solar panels that you can fit on the dashboard when the van is in storage .can they plug into the cigerette lighter socket and are they any good .some advice would be very helpfull . also do i need to charge the leisure battery during storage .