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Old 02-12-2015, 06:41 PM   #1
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Replacing House Batteries

On my 2010 390bh, I have had issues with my house batteries for at least 2 years. It has 4 six volt Lifeline AGM batteries. They are about the most expensive batteries and I thought they would be the best. My technician is assessing the best replacement. One question, when changing battery types, jell to water, is there a way to program the Magnum MM1212 with the RC remote, to accomodate different type of batteries. The default setting is for liquid lead acid. The more advanced RE remote, offers a setting for each type. My tech believes that when my AGM batteries were installed, the setting must have been adjusted. Otherwise, it may explain their poor performance.
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Old 02-12-2015, 07:23 PM   #2
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Factory Default Settings
Your MM Series inverter uses default settings that are adequate for
most installations. However, if you determine that some of your operating
parameters need to be changed, the optional ME-RC50 remote

allows you to control the operation and to customize the programming
parameters of the inverter and/or charger.
Table 5, Inverter Default Settings
To help you determine if you need the ME-RC50 remote*, information
on the settings that can be changed is provided below.

Function Default Settings
Search Watts NA (MM612),
5W (MM1212)
LowBatCutOut 10.0 VDC
Battery AmpHrs 400 AmpHrs
(Absorb Time = 120 minutes)
Battery Type
Flooded - Liquid Lead Acid
(Bulk = 14.6 VDC,
Float = 13.4 VDC)
Charge Rate 100%
VAC dropout 80VAC


The settings
once programmed are saved in non-volatile memory and will be preserved
until changed – even if DC power to the inverter is lost (the
ME-RC50 must always be connected).

Search Watts: This setting allows you to enable the power-saving
Search Mode circuitry and to adjust the power level at which the
inverter will “wake up” and start inverting. This function is not
available on the MM612 model and is adjusted to

5W (“wakes up” and
inverts if loads exceed 5 watts) on the MM1212.

LBCO: This setting determines when the inverter will turn off based
on low battery voltage (inverter turns off automatically after battery
voltage has been below this setting for more than one minute). This
protects the batteries from over-discharge and the AC loads from
unregulated power (brown-outs).

Battery AmpHrs: This setting allows the user to input the battery
bank size in amp hours, which provides information to the charger on
how long to charge the batteries in the Absorb Charging stage.

Battery Type: Sets the type of batteries being used in the system
which provides information to the charger to determine what voltage
level to charge the batteries.


Charge Rate: This setting uses a percentage of the charger’s max.
output to determine the output charge rate. This setting can be used
to limit the amount of current that the charger can use (leaving more
current available to power loads); or, to ensure small battery banks
are not overheated because of a charge rate that is too high.

VAC Dropout: Sets the min. AC voltage that can be present on the
AC input before the unit transfers from Transfer Mode to Invert Mode.
This protects the AC loads from utility outages and brown-outs.

* Visit our website (Home - Magnum Energy, Inc.) for more information.
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Old 02-12-2015, 10:33 PM   #3
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Dan
I don't have the RE remote. It is $183 on Amazon. Is the benefit of added functions worth the cost?
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Old 02-13-2015, 09:51 AM   #4
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kingwood, I'm afraid I can't say if the benefit is worth it.
I was just looking up the info on what appeared to be needed to be able to set the battery type.
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Old 02-13-2015, 11:16 AM   #5
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Quote:
Originally Posted by kingwood390bh View Post
Dan
I don't have the RE remote. It is $183 on Amazon. Is the benefit of added functions worth the cost?

I changed mine because the original remote charges at 100% charge rate. This boils the batteries and causes the excessive corrosion. Once I changed the remote I was able to lower the charge rate and the corrosion stopped. It does have the function to change battery type ect but I haven't needed those setting changed yet.


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Old 02-13-2015, 12:31 PM   #6
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Not any of my buisness, but I would say the remote would be worth it. 183.00 is lot cheaper then replacing them batteries.....
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Old 02-13-2015, 04:48 PM   #7
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I think with the improved functionality it is worth it. Do you know if the upgrade is as simple as replacing the box or might I have to pull wires into the coach?
Thanks
Will
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Old 02-13-2015, 07:48 PM   #8
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I think with the improved functionality it is worth it. Do you know if the upgrade is as simple as replacing the box or might I have to pull wires into the coach?
Thanks
Will

Just replacing box. I had to trim a little bit of wood. Other than that it's plug and play. Very easy.


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Old 02-14-2015, 07:43 AM   #9
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I'm buying one today. Thanks for all the help.
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Old 02-14-2015, 07:58 AM   #10
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Originally Posted by kingwood390bh View Post
I'm buying one today. Thanks for all the help.
Let us know how it works out for you and it will do what you need it to do...Thanks....
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