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Topic: Outback Inverter Setting & Use Questions (Read 333 times) previous topic - next topic

Outback Inverter Setting & Use Questions

Hello from near Houston Intercontinental Airport. 

Am hoping someone uses and understands Outback brand Inverter / Chargers in a Motorhome Application.

I have two 2006 year model VFX3524 Mobile Outback Inverter / Chargers with a PSX-240 "autoformer" and 4-port Outback Hub. 

The system is set up to provide only 120vac and has four 8D AGM batteries wired in both series and parallel.

I have owned my RV for 2 1/2 years and it came with brand new DEKA "Dominator Extreme GEL" batteries which lasted only two years.    I limped with those batteries until almost one month ago at which time I had to replace them, and did so with four Napa brand 8D AGM batteries that I understand are made by East Penn.  (wanted Concord Lifeline batts as replacements but none were available)

In an attempt to not lose another set of batteries prematurely, I would appreciate knowing your settings and experience with your Outback system with AGM batteries - and how long YOUR house batteries typically last.

My settings are:

P1 Charger Control = ON
P2 Charger Control = Auto
Charging Current on P1 = 18 amps
Charging Current on P2 = 10 amps
Absorb setpoint 28.2 volts for 4 hours (P1 & P2)
Float setpoint 27 volts for 1 hour (P1 & P2)
Re-float setpoint 25 volts (P1 & P2)
Equalization OFF

THANK YOU very much!  Jeff...
Jeff & Sandy
1997 American Eagle 40' Slide-less
2013 Toyota FJ Cruiser 4X4 Toad
Interested in Foretravel Coaches

Re: Outback Inverter Setting & Use Questions

Reply #1
Here is a good link with AGM 24 volt recommended voltages. Not sure if you have battery temp monitoring.

AGM Charging : Technical Support

It looks like your Absorb and Float voltage settings are a little low (using the red temp column). Continually undercharging will shorten battery life. Properly maintained (properly charged) AGM batteries should last 6-8 years, some members report even longer.
Peter and Tammy Fleming
1991 U300 GV 40 - Sold, owned for 4 years
Downsized to Roadtrek Popular 210 class B

 

Re: Outback Inverter Setting & Use Questions

Reply #2
Thank you Peter
Jeff & Sandy
1997 American Eagle 40' Slide-less
2013 Toyota FJ Cruiser 4X4 Toad
Interested in Foretravel Coaches