E-meter [RE-wrenches]

[Global Resources]

John:

Sounds like sulfation, which can occur fast. This would capture some of the 
sulfur, not letting it go back into solution, resulting in the lower 
specific gravity readings. Two possible solutions, which MIGHT work. First 
is one or two strong and long equalizing charges. Second is an electronic 
battery desulfator. I only have experience with the CanPulse unit, which is 
more expensive than some, but which I know works.

Jeff

Jeffery D. Wolfe, P.E.
Global Resource Options, LLP
A Woman-Owned Vermont Limited Liability Partnership
4 Kibling Hill Road
P.O. Box 51
Strafford, VT 05072
802/765-4632
802/765-9983 (Fax)
global at sover.net
www.GlobalResourceOptions.com


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From: 	cvsolar at aol.com[SMTP:cvsolar at aol.com]
Reply To: 	RE-wrenches at topica.com
Sent: 	Monday, May 01, 2000 10:55 PM
To: 	RE-wrenches at topica.com
Subject: 	E-meter [RE-wrenches]

Hi all,
   I am doing another experiment at my house (along with the humming DC250) 
to determine the negative aspects of an undersized battery bank.  I have 
gone
to manual generator start so I can play with the battery state of charge. 
 I
have 4 Trojan L16G batteries in a 24v bank feeding the SW4024.  Loads vary
from a base of 4 to 8 amps to a peak of 70 to 80 amps.  Charge rate with my 
Yamaha 4600 is set at 60 amps.  Because I have been hitting the batteries
hard at both ends,  I have noticed a deterioration in the batteries 
capacity
(in only 4 weeks of usage) .  I will get down to 80% on the e-meter and
negative amp hours agree but my battery voltage is way down indicating 
 less
than 50% left.  I fiddled with the Peukerts exponent setting and set it to
1.5 (the maximum) and it didn't seem to make any difference.  Does the
e-meter just lose it's ability to properly track the battery at high loads? 
Anyone had any experience with this.  I saw a similar problem with one
installed system with big loads and small battery bank.

Unfortunately I did not have the e-meter on my old bank of 16 T105's that
were worn out so I don't know what the indications of a failed battery 
would
look like.  These batteries charge to 28.8 without any trouble but they are 
having a fast voltage drop similar to my worn out T105's (though not as 
bad)
The negative amp hours on my e-meter seem to be correct based on my loads.
Battery specific gravity reading indicates batteries are not really fully
charged after running the generator for two hours at 28.8v  bulk absorption 
charge.  Current drops off normally.    Does this have something to do with 
the HUMMMMM?  I'm confused!

John Blittersdorf
CVSolar
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for info contact: <michael.welch at homepower.com>
___________________________________________________________
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