Magnum Inverters - RF issues, charging params... [RE-wrenches]

[Allan Sindelar]

Here's a short piece sent to me today by Gary Baxter of Magnum that directly
relates to this issue:
All charge voltages are temp compensated and if a Battery Temperature Sensor
is not used (it is included with each unit) then the temp comp defaults to
25C/77F. I did notice that there isn't really a mention of temperature in
the attached sheet except for using the word "temperate" although most
battery manufactures use 80F as their temperature spec. We use 25C/77F as
our spec so we are charging slightly higher if their spec is at 80F but not
enough to notice.


You can EQ in the Flooded or AGM1 setting but not in GEL or AGM2 modes (they
default to Absorb voltage if EQ started). In order to EQ you need to be in
Float or Battery Full then hold down on the "Chg" charger button for 10
seconds. The EQ voltage for Flooded is 15.5 Vdc with a 4 hour timer. You can
stop EQ by again pressing and holding the "Chg" button or disconnect from ac
source. You can EQ as many times as you want in succession.

Allan at PosE

----- Original Message ----- 
From: "Todd Cory, Mt. Shasta Energy Services" <toddcory at finestplanet.com>
To: <RE-wrenches at topica.com>
Sent: Monday, December 03, 2007 5:44 PM
Subject: Re: Magnum Inverters - RF issues, charging params... [RE-wrenches]


>
> What about setting it to the equalization setting. I forget the voltage,
> but it is probably higher.
>
> Todd
>
> Ray Walters wrote:
>
> >
> >
> > THis inability to set the charge voltage is definitely a wart IMHO. I
> > understand the reasoning, especially for the RV market, but we need
> > totally different settings with an off grid setup and part time
> > generator.
> > How bout this those with more grey matter than me: Couldn't we cook
> > up a replacement potentiometer for the temp sensor, and "trick " the
> > inverter into higher or lower voltage settings?
> > or Just take the sensor and put it in a glass of ice water?
> > Kludgy yes, but it could solve the problem short term.
> >
> > R. Walters
> > Solarray.com
> > NABCEP # 04170442
>
>
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