re lead acid batteries concrete in article apr cronkite ocis temple edu camter astro ocis temple edu carter ames writes i was just wondering one thing actually two i hope that this is the proper place to post this subject why does a lead acid battery discharge and become dead totally unuseable when stored on a concrete floor i decided to bring the battery in from the lawn mower and the motorcycle from the unheated garage this year to preserve them and i just went to use them and noticed that not only do they not work but they act like the two terminals are shorted i asked a friend and he said that you should never do that cause it ruins them but he couldn t tell me why it s not the concrete floor that does it the problem is that lead acid cells self discharge over time even high quality cells gates for instance will discharge over a month period of time non sealed cells self discharge even faster if the battery was not completly charged when left sitting it probably discharged past the the point where cell sulfiding occurs which in many cases means a ruined battery datalog consulting tucson az ejm datalog com noao datalog com ejm
