My memories of Niagara Falls consist of the Hooker Chemical Company and its nightly smoke fallout all over our car and anything else in its pathway. An aluminum ham radio antenna I had was eaten and destroyed in one year, yet I have no idea what we were breathing there. The air smelled like sulphuric acid as I did my daily commute across Grand Island to Channel 7 in Buffalo. I also remember the massive smoke cloud that covered the highway south of Buffalo. I'm sure that I missed a lot of good industrial tours and information, but my young focus was elsewhere at that time.Franz© said:Harry, did you ever get over to the battery factory at Niagra Falls?
We supply battery charging equipment and batteries to the utilities here in the UK, and amongst our current work is a replacement battery for a substation which is 18 X 6V 200AH lead-acid batteries. These are replacements for 54 2V 200AH cells, which will go for recycling after removal.Harry said:OK, condensation along with a rubber and graphite case I can accept. I was about ready to try my megger on the concrete floor. With today's plastic batteries, I think we can put this story away, but if you can't, there's always a wooden block.
Lead acid batteries, due to chemical reactions with impurities in the acid and plate material, cause a resistance to electron flow, will eventually make the potential in the battery drop. It only takes about a month or two of inactivity to make the battery start to show signs of discharge. The graphite cases haven't been made for some time now due to the fact they were a fire looking for a place to happen.Franz© said:Harry cast a gaze back to the 50s, and remember battery cases were made from Hard Rubber, using graphite as a coloring. Factor in osmosis.
Old wives tale my butt, those batterys did self drain due to the construction of the battery itself. Plastic battery cases pretty much eliminated that.
Probably worth qualifying what I said there, as it doesn't read right!ListerDiesel said:In all the jobs we have done, every battery has either a rack or a cabinet, and the main reason for not standing on concrete or other such surfaces is to prevent earth leakage from either battery pole to ground.
I work for Sargents auto electric and have disscussed this many times i think Larry pretty well covered it, most of the tale came from Glass batterys with open lead connectors that had a tendency to sweat, There is no reason to be concerned about your Plastic batterys, There is one shop out here won't let the delivery guy even drop them off alone, he has to carry every battery and put in 0n the rack, wont let them touch the floor!!! NUTsLarry Rusch said:Lead acid batteries will self discharge if a leakage path develops between the positive and negative posts on the battery. This is exacerbated by dirty battery cases and wet conditions. Sulfuric acid is hygroscopic and if any acid residue exists on the exterior of the battery it will stay damp in humid conditions and provide the necessary leakage path. Early battery construction made this situation worse because the cell connectors were outside of the battery and offered many more spots where leakage could develop. Additionally, lead acid batteries self discharge because of small local cells developing within the battery itself. This is primarily due to sulfation but can happen because of non-uniformity in cell construction. Thus a battery can discharge even if suspended in the air. Battery manufacturers typically store (charged) wet cell lead acid batteries in freezers. As long as the temperature is above the freezing point of the electrolyte no damage will occur. They do this to preserve the battery as the chemical reactions that cause discharge and degradation slow significantly as the temperature is lowered.