heading OT .. Battery Charging

[desinor@sympatico.ca (Désinor Jean-Claude)]

  When the battery is in use, some material detaches from the plates and
goes to the bottom of the case.  That material eventually piles up and
shorts the plates.

  For deep cycle batteries like the one I use for emergency power, there
is lots of room between the bottom of the plates and the bottom of the
case. It takes a long while for the cavity to fill in.

  Automotive batteries have a different design point, less room at the
bottom. So if you deep discharge them too often, they become quickly
inoperative.

  Then there are vibrations.  Heat is also the ennemy of the batteries,
and so is cold. remember it is the same chemicals that sit in the
battery all year long.

  Maybe it is possible to build 20 year batteries, but would we be
willing to shell out for them?

	Jean-Claude
	84 8v

Brian Haygood a écrit :
> 
> Nah, I'm sure 20 year batteries are possible.  It's usually vibration that
> kills them, and providing better support for internal components is pretty
> straightforward engineering.  Just like lightbulbs.  There is no real trick
> to making those last forever, but capitalism prevents it from happening.
> 
> BH