Never store on concrete-put it on a piece of wood. (I don't know why but it will discharge faster if left directly on concrete.) > David Teitelbaum > vin 10757 > > This is not an urban legend; it is true even though it seams to defy basic laws of electric/chemistry. Most batteries are in the engine compartment thus they get dirty. The dirt on the battery forms a conductive path (it is a very high resistance thus it is small but a conductive path all the same). The concrete is also somewhat conductive so by putting the battery on a conductor you are exacerbating this problem. If the battery is clean (as David recommends) then putting it on a piece of wood (and insulator) is really not critical. For those of you who enjoy useless and trivial information I hope that helps. One of the best things I have found for car / battery storage is a float charger. They run from $10 to $50 and they keep the battery toped off at all times (without cooking it) which will give you the longest battery life. It also will cover the ma amp draw that the batter has from clocks, alarm systems etc and has the added advantage of keeping the memory on your radio, clock and computer. Regards, Mike D. Vin 3113 NY