Results of test yet? [RE-wrenches]

[Doug Pratt]

These are about the same results that electric vehicle folks have been
reporting with pulse chargers. (I've been heavily into EVs for years.) Even
batteries that seem to be sulfated so solid that no amount of charging will
break them loose, will respond favorably to being pulsed, particularly if the
pulse happens along with elevated charge voltages. Those high voltage pulses
seem to drive sulfation off the plates better than straight high voltage. I
like the CanPulse units because they don't even turn on till the battery
voltage gets pretty far up.
  The bottom line has been that pulse units work great on batteries that have
been neglected and allowed to sulfate heavily. They don't do much for batteries
that get routine exercise and charging.
-Doug Pratt

"Roy Butler, Four Winds RE" wrote:

> Hi Steve,
>
> Well, one of those people would be me. I've had a heck of a time trying to
> get the test done with the CanPulse unit from Jeff Wolfe. The unit's
> capacity is too small to allow me to use it on my 1050 AH / 24vdc home
> battery bank. And I had to loan my 24 vdc charger to a customer and haven't
> gotten it back yet....so the 24 volt unit testing hasn't happened yet.
> Thanks for your patience Jeff!!
>     But....on the 12 volt DS-500 desulfator from IES....I've been able to
> perform several tests. I'm not quite ready to write this up "officially"
> right now, but can offer you this unscientific version of my findings.
>
> On 2- 650 CCA start batteries (app age of 1 year).....both of these had
> been left completely discharged for several weeks after having failed
> prematurely due to abuse (not mine!). Both failed to accept a charge using
> a conventional 2/10/50 amp Schumacher auto battery charger. The DS-500 was
> connected to each one in turn and charged again...using the same charger
> and the same charging times as previously. Both batteries appeared to fully
> charge and passed a 20 second (starter) load test with flying colors,
> although 1 of them did require a second round of charging. This battery had
> a slightly bulging case and appears to have been frozen. These batteries
> are now being used in various vehicles...in very cold weather....with great
> success (so far).
>
> On my old (3 years) 90 AH trolling battery. This has been used for shop
> projects, demos and shows...and occasionally for 2 meter ham radio use. I'm
> ashamed to say that it's been severely neglected...by me and by others that
> have borrowed it. It was returned by one person complete dry....no
> electrolyte in sight!(a paucity of electrolyte?) Visual inspection showed
> severe sulfation. I've been throwing a charge at it whenever I had enough
> wind power here to justify the power usage. And over the past 12-14 months,
> I'd come to the conclusion that this battery needed funeral arrangements.
>
> Using the exact same charger and charge times that I had with MANY previous
> charging attempts, but now with the DS-500 attached, this battery was
> successfully charged. FYI....this was done with several back to back
> chargings over 3 days. The battery passed the 20 second (starter) load test
> with flying colors, powered my 12 volt/ 50 watt drop light for 19 hours (I
> can live with 80% capacity!) and after being fully recharged has now been
> sitting, unused, on my bench for 6 weeks.
> At this moment, it has only self-discharged down to 85% capacity and just
> passed another 20 second load test. Not too shabby for that old timer!
>     I'm going to start on my old (and heavily sulfated) golf cart batteries
> next week. And I should have my 24 volt DC charger back shortly and can
> start on the 24 volt desulfator test. I'll keep you all posted.
>     One final note...I fully realize that these tests don't conform to
> standard testing procedures and won't satisfy a lot of folks. But...being a
> non-believer myself, I'm rapidly becoming convinced that there is
> definitely an advantage to using these desulfators. Something is happening
> here which is allowing me to "bring back" batteries which I would normally
> throw away. And the results I'm getting by using "real world" testing
> (using them in my vehicles, etc.) certainly can't be ignored. Further
> testing and study is definitely required but so far, so good!
>
> Roy Butler
> Four Winds Renewable Energy Co.
>
> - - - - - - -
> To send a message:
>  RE-wrenches at topica.com
>
> The archive of previous messages:
>  http://www.topica.com/lists/RE-wrenches/
>
> List rules & etiquette:
>  http://www.mrsharkey.com/wrenches/etiquete.htm
>
> To unsubscribe send a message to:
>  RE-wrenches-unsubscribe at topica.com
>
> To check out the other RE-Wrench participants:
>  www.mrsharkey.com/wrenches/index.html
>
> Hosted by Home Power magazine:
>  www.homepower.com
>
> For info contact list moderator by email:
>  michael.welch at homepower.com
>
> ____________________________________________________________
> T O P I C A  -- Learn More. Surf Less.
> Newsletters, Tips and Discussions on Topics You Choose.
> http://www.topica.com/partner/tag01

- - - - - - -
To send a message:
 RE-wrenches at topica.com

The archive of previous messages: 
 http://www.topica.com/lists/RE-wrenches/

List rules & etiquette:
 http://www.mrsharkey.com/wrenches/etiquete.htm

To unsubscribe send a message to: 
 RE-wrenches-unsubscribe at topica.com

To check out the other RE-Wrench participants:
 www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine: 
 www.homepower.com

For info contact list moderator by email:
 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01