I am a bit of a novice with electric fencing! Lily is moving back to the pony fields and I am fencing of a field for her so she is on restricted grazing. I have poles and tape but I was lost looking at the batteries! I don't really want one that will need new batteries every other day but not really sure what to go for - any recommendations and tips for connecting it all up very welcome!!! I can pay up to about £50 for the battery