re lead acid batteries concrete neal cmptrc lonestar org neal howard writes the concrete floor accelerates the problem because it is a heat sink and a colder lead acid battery self discharges at a slightly faster rate that s why the old wives tale of sitting it on a piece of wood on the floor works to help keep from killing the battery as fast it insulates the battery thermally it you ll set the battery down on a piece of styrofoam it will self discharge even slower there are a number of inaccuracies here in fact a colder battery will self discharge more slowly this is why batteries should be stored in a cool dry place an battery placed on concrete does not become colder than one placed on wood the battery the wood and the concrete will all be at the same general temperature ignoring temperature fluctuations and thus none will effect the other the best thing would be to attach a small load such as a small transistor radio with the volume turned down low and leave it on constantly but also trickle charge it every couple days too to shallow cycle the charge in the battery such mild exercising of a lead acid battery is the next best thing to completely removing the electrolyte for storage there is no need to exercise the battery just keep it charged a trickle charger will do the job stuff deleted
