Date: Wed, 21 Apr 2010 18:25:54 -0700
Reply-To: "Mike \"Rocket J Squirrel\"" <camping.elliott@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Mike \"Rocket J Squirrel\"" <camping.elliott@GMAIL.COM>
Subject: Re: charging aux battery: too much of a good thing?
In-Reply-To: <56e9387260e6471032cfea242881c876@shaw.ca>
Content-Type: text/plain; charset=UTF-8; format=flowed
On 4/21/2010 6:16 PM Phil Zimmerman wrote:
>
> On Apr 21, 2010, at 3:36 PM, Mike "Rocket J Squirrel" wrote:
>
>>> On Tue, 20 Apr 2010 15:11:51 -0700, mark drillock
>>> <mdrillock@COX.NET> wrote:
>>>> Today I was able to fire up my 3 battery system for the first time. A
>>>> dedicated 125 amp hour deep cycle was added......
>>>> ....I don't know how it will be in practice. Anybody know?
>>>> Suggestions?
>>> -----------------
>>> Phil Z. ably typed:
>>> Hi Mark,
>>> Wow... now thats a dedicated aux battery for an Italian Gelato
>>> Refer....
>>> ....Might be worth the time and effort to put a temperature probe on
>>> the battery
>>> to measure its temperature while Underway and Charging. See what the
>>> temps are?
>>> -----------------------
>> Mr Buddy Squirrel Mike Elliott typed:
>
>> Your top-shelf chargers have a temp probe you screw to a battery
>> terminal so they can compensate for temperature.
>> ----------
> Gads Mike, you been reading the same battery porn I have.
> A temperature compensated Battery Charger.
> I'd sell my Westie for one!
> Wait... then I wouldn't need one.... Forget that Idea. They are in
> the $4-500 range anyway.
>
> Anywho, I assumed Mark would have a Thermister/Thermocouple for his
> VOM that he could hook-up to measure the temps
> back at his new cool Auxiliary Battery next to that even cooler Ford
> Four-Banger Zetec engine in the Stretch testmobile.
>
> Did a quick look for battery charging temperatures not to be
> exceeded..... Optima says: 125 F.
> Which, in my less than stellar recall, is about the average
> engine-room temperature of an average Westy on an average day,
> while running down an average highway. Slow down entering a City or
> hit a Stoplight and the temperature spikes up big-time.
>
> Think this will be salient to Marks question. Did you install a DC to
> DC Charger on your Rig to top-up your Aux Batteries?
I did. And I posted the details on the vanagonwiki. Which, alas, has
been forever and ever lost.
--
Mike "Rocket J Squirrel" Elliott
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
Bend, OR
KG6RCR
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