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Batteries
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Posted by Robert on December 28, 2003 at 07:18:20 from (208.23.178.171):
Truths (?) Concerning batteries... A cell is a cell. A battery is two or more cells connected together in series.
A 6 volt battery is actually three 2 volt cells connected in series already. All the current produced by the 6 volt battery has to go through each individual cell, so, the current rating of the battery has to be the same current rating of each individual cell.
Identical as they may be, no two cells have EXACTLY the same voltage, so, if you connect two cells or batteries in parallel, one will always be discharging into the other, effectively overcharging one cell (or battery) while discharging the other. Process may be small to almost negligeable, but still present. Not only common in the early 60's for tractor manufacturers to put two 6 volt batteries in series, it continued much later. I had a 1977 John Deere 4230 I bought new. It had two six volt batteries in series.
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