Thanks for your help guys.
Ive got my hands on a 12volt car battery that i will rig up to the system. Probably dont even need a solar panel because the maximum times between visits to the property are less than 1 month.
Eventually however I would like a self sustaining set up that can just recharge. Its good to know and once i get my self a bit of extra cash to go splurging on the set up i'll get some half decent panels and batterys.
Hopefully within the next few weeks I'll have a photo of the crook guy that flogging my gear!