With all my summer toys I think I need about 8 battery tenders to keep everything charged over the winter. Anyone got some working used ones lying around that they don't need? I am dreading spending $25-30/each for new ones on ebay or similar. Unless someone has a cheaper alternative. I have about 6 batteries for various boats and 2 PWC batteries and right now one tender that I have on the v-rod. Anyone know alternatively if it would be OK to just buy about half of them and rotate every week or two?