On 9/3/2011 7:57 PM, Darryl Thayer wrote:
I have had one experiance with equalizers, the batteries be came very
unequal. (over time of course)
*From:* R Ray Walters <r...@solarray.com>
*To:* RE-wrenches <re-wrenches@lists.re-wrenches.org>
*Sent:* Saturday, September 3, 2011 5:55 PM
*Subject:* Re: [RE-wrenches] unique battery bank design question
Systems I tried years ago with Vanner equalizers, still ended up being
unequal. I pulled them all years ago. It seems to be about as much a
problem as not balancing your battery cables so each battery string
has the same wire resistance,
I know that you couldn't imagine a few amps on 12" of 2/0 making a
difference, but after 5 years the battery damage is very consistent
and identifiable.
The only load I would consider tapping would be metering, or maybe a
low milliamp relay. I wouldn't go over 100 mA, and even then I bet you
would see some long term imbalance. I've seen imbalances due to some
batteries just being closer to a cold outside wall.
R. Walters
r...@solarray.com <mailto:r...@solarray.com>
Solar Engineer
Has anyone that has used battery balancers checked the individual
battery voltages or SG during charge and/or discharge to
see how well the balancers worked ??
Could it be that the batteries themselves were just not quite the same
age at the start ??
I would think that a decent balancer system that makes things share
should work pretty well. Maybe the balancer
itself does a bit of unbalaced charge/discharge ?
boB
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
