Re: Ok guys figure this one out

Posted by Errin OH on June 19, 2006 at 11:58:33 from (198.57.19.126):

In Reply to: Ok guys figure this one out posted by old on June 19, 2006 at 11:05:21:

I’ll take a crack.

Think of it as filling a large container with a water hose, closed up (no breather). As it fills the back pressure would slow down until it matched the input pressure. It would appear to fill faster at first then slow down to a point where it wouldn’t appear to be filling at all. Charging a battery is much the same. When you first connect it, it draws the max current. As the voltage rises, the current goes down. Now let’s say the container had cells in it. Each cell was connected by a hole at the bottom. As the water enters the first cell it will pass to the next and so on. (poor analogy). If the hole becomes blocked the cell will fill until the pressure is enough to push out the blockage. If it doesn’t, it will only fill that cell. Batteries are kind of like that with an exception. You can short a cell so the water would pass through it with out filling it. Battery charger ratings are set by voltage 1.5 would be a lower voltage than a 40 (less pressure). If you had a cell that had some crud on it the lower amps would just pass thru it and not charge the cell. With a higher amp it could arc and burn off (open) the cell and it take a charge.

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