Hi,thanks for the replies.I went over yesterday afternoon.Tested the voltage and found it to be down to about 4000v from over 6000as high as the meter goes.
I disconnected any non essential nets and dug round the rest,the voltage went back up.My biggest fear was the battery would be dragged down,I feel better now that you have explained SfS.
You are totally correct Chris when you say I should come up with a better long term solution as you have suggested and something I would like in the future.I am trying to buy the land but currently only rent it.
Graham.