Battery Fuel Gauge [RE-wrenches]

[Joel Davidson]

<x-flowed>

All,

To summarize:
1) Almost all PV/battery system owners do not know or only roughly 
guesstimate their battery SOC.
2) Some Wrenches like the Trimetric meter and a few like the e-meter.
3) There is no simple plug-and-play battery fuel gauge that does not require 
programming and still may be inaccurate because of changing battery age, 
charge/discharge patterns, self-discharge rate, temperature.
4) Some Wrenches make scheduled or occasional service calls to inspect and 
test their customers' systems and batteries.

Did I miss anything? Is there any more to say?

Thanks for your input.

Joel Davidson

----- Original Message ----- 
From: "Michael Welch" <michael.welch at homepower.com>
To: <RE-wrenches at topica.com>
Sent: Sunday, November 05, 2006 4:04 PM
Subject: Re: Battery Fuel Gauge [RE-wrenches]


>
> Hi Joel.
>
> Sorry, but there is no metering on my batteries and I have no idea what 
> the factory says it would take to float them. Maybe I should check with my 
> installer. ;^)}}}}}
>
> I look forward to having something-or-other hooked up to the shunt that 
> came pre-installed in my PS2DC.
>
> Joel Davidson wrote at 09:17 PM 11/04/2006:
>
>
>>Michael,
>>
>>Do you know how much of that 250 watts float charged the battery bank and 
>>how much went to the service panel and/or grid loads?
>>
>>Joel Davidson
>>
>>----- Original Message ----- From: "Michael Welch" 
>><michael.welch at homepower.com>
>>To: <RE-wrenches at topica.com>
>>Sent: Saturday, November 04, 2006 2:30 PM
>>Subject: Re: Battery Fuel Gauge [RE-wrenches]
>>
>>
>>>
>>>Hi gang. Forgive my non-wrenchness, and forgive me if this is obvious. 
>>>But I wanted to briefly chime in on determining backup battery capacity 
>>>for intertied systems.
>>>
>>>Just like an off-grid system, also to be considered is the PV array that 
>>>is in place and continuing to charge the batteries at some level. Even 
>>>though pretty cloudy out, Redwood Alliance's intertied system is still 
>>>showing 250 watts on the MX-60.
>>>
>>>I suppose to justify this message, I should remind the rest of you to 
>>>update your bio pages at www.mrsharkey.com/wrenches/
>
>
> ------------------------
>
> Michael Welch
> Submissions Coordinator
> Sr. Research Editor
>     Home Power magazine
>     www.homepower.com
>
>
> - - - -
> To send a message: RE-wrenches at topica.com
>
> Archive of previous messages: 
> http://lists.topica.com/lists/RE-wrenches/read
>
> List rules & how to change your email address: 
> www.mrsharkey.com/wrenches/etiquette.php
>
> Check out participant bios: www.mrsharkey.com/wrenches/
>
> Hosted by Home Power magazine
>
> Moderator: michael.welch at homepower.com
>
>
> 


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

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------




</x-flowed>