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-   -   AGM Battery Upgrade - Firefly Multiplex Settings? (http://www.thorforums.com/forums/f27/agm-battery-upgrade-firefly-multiplex-settings-17637.html)

IsItHappyHour 06-05-2019 04:54 PM

AGM Battery Upgrade - Firefly Multiplex Settings?
 
Hi,

I upgraded the batteries in my 2018 Thor Palazzo and need to set the amp hours setting on the Firefly multiplex. I now have (4) 6-volt Lifeline AGM batteries (Wired in series). Each battery is rated at 220 amp hours. (440 for each pair) What do I select for amp hours on the multiplex? 200?, 400? or something else? I already switched the battery type to AGM. Any help is appreciated.

HaRVey 06-05-2019 08:32 PM

Each 6 volt pair at 440 amp is equal to one 12 volt at 220 amp, so since you have two pairs, put in 440 amps on your FireFly. I do not know what this setting controls and have played around with different values and not observed any difference...

TurnerFam 06-05-2019 08:45 PM

1 Attachment(s)
right...
in essence, since you are doubling the output of a 12v 220amp hour SERIES battery 'bank', when in PARALLEL with another, you are then doubling the amp hours to 440.

Use 400 if that is your only option - it's close enough for hand grenades, horse shoes, and submarines. (...that's a good 'ol saying from another time!)


Series(Positive to Negative) wiring doubles the VOLTS, but thereby decreases the HOURS
Parallel(Positive to Positive) wiring doubles the HOURS, while maintaining the same VOLTS

here's a photo of my house battery bank:
DURACELL GC(GolfCart) 6v 215ah Battery bank...
in Series and Parallel = 12v at 430ah = 215ah usable power for
FLA Flooded Lead Acid batteries

IsItHappyHour 06-05-2019 11:35 PM

Thanks! That makes sense.

IsItHappyHour 06-05-2019 11:38 PM

Thanks for the support! Not sure what the Firefly multiplex does with the info but I have it set at 400 amps. Thanks again!


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