EQ guidelines [RE-wrenches]

jay peltz jay at asis.com
Sat Mar 2 14:27:34 PST 2002


Hi All,

For around here, the more the better.

Just about impossible to over EQ your batteries especially with a PV system,
just not enough sun hours in the day. Wind and hydro its possible though.

I use one time month as best.  If you batteries are reaching 14.8+ on a
daily basis, then every 2-3 months is fine.  If they are not seeing that
then every 2-4 weeks is best for life of battery.

But then you have to figure how are you EQ'ing the batteries.  If its with a
genny, then every 1-2 months as it takes too long.

Remember that almost with out exception the death of solar batteries is from
undercharge,not overcharge.( wet not sealed of course)

Jay

Peltz power

sunwise at cheqnet.net wrote:

> Greetings all,
>
> I have a couple of clients who are asking for more specific info on just
> how often one should be equalizing their lead-acid battery.  They have
> gotten different stories from different sources.  I have my own
> guidelines, but wanted to quote them some hard info from documented
> sources.  I found a lot of fuzzy formulas and confusing statements when
> I turned to some of my references.  Anyone care to contribute?
>
> Let's include everything from number of cycles (how deep?), to voltage
> variations of individual batts in a pack, not cells ofcourse (and does
> the pack have to be at rest), and cell variations in specific graviety
> just for the mess of it.
>
> Thanks for any input,
> Kurt Nelson
>
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