[RE-wrenches] Battery impedance analyzers

Larry Crutcher, Starlight Solar larry at starlightsolar.com
Fri Mar 27 10:54:07 PDT 2009


Travis,

The local Interstate distributor has one too but only for a starting  
battery, nothing for deep cycle or 6 volt batteries. I'll let you know  
what I find out.
I realize most wrenches are grid tie installers. How many off grid  
battery wrenches are on the list?

Larry



On Mar 27, 2009, at 6:19 AM, Travis Creswell wrote:

> Hi Larry,
>
> I’ve often wondered about them.  My local battery  
> “superstore” (everything from cell phone to golf carts) had been  
> using them for the last few years to test automotive starter  
> batteries and deep cycles but the last time I was in there I noticed  
> they’d gone back to the old standby resistance/carbon pile style  
> testers.  I inquired and wasn’t able to get any exacts but the  
> summary was they were not happy with them.  I’m curious to know your  
> findings on both fronts.
>
> Best,
> Travis Creswell
> Ozark Energy Services
> www.ozarkenergyservices.com
>
>
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org 
> ] On Behalf Of Larry Crutcher, Starlight Solar
> Sent: Thursday, March 26, 2009 7:08 PM
> To: RE-wrenches at lists.re-wrenches.org
> Subject: [RE-wrenches] Battery impedance analyzers
>
> Hello Wrenches,
>
> Is anyone using an impedance type battery analyzer for lead acid  
> batteries? If so, what do you have and how has it worked out. I have  
> seen prices from $200 to $7500 and I'm sure there is a world of  
> difference.
>
> I have been using a pulser circuit I built about 4 years ago to  
> restore nearly dead AGM batteries but I have not had any  
> sophisticated method of verifying before and after performance. I  
> perform a constant current equalization with no voltage limit and  
> then leave the battery on the pulser for a few weeks. This works  
> great and I have restored and sold a few used AGM batteries that  
> would have gone to the recycler. Today our battery buyer just picked  
> up another 15,400 lb. of batteries from us. Yep, they were mostly  
> murdered! I would like to be able to restore more of them.
>
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