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please help with conflicting settings, mate vs. charger

Posted: Tue Jan 14, 2014 11:24 pm
by zuessdoggg
I have problems, I think?! Please help me, i am a beginner & noone seems to know much about these systems here. We have just installed Lithium batteries on our flex power one, bulk 58.4, float 54.8, inv warning at 51.2, Inv shutdown at 48v . The charger itself says Absorb 58.4 & float 54.8 for half hour which is correct. The mate says adv/FX/charger absorb 57.6 for one hour, float 54.8 one hour, refloat 50.0.
A- I thought they should have the same voltage set points showing on both mate & charger. Or is the absorb setting on the mate, temp compensated?
B - whyis the absorb time different on each?
C - shouldn't the refloat voltage be higher than that? I did not put this setting in & battery supplier does not know what it means. It would appear it is default. Should I change this?
D - on the charger it has RTS compensation a - 59.2v & f - 55.6v, what does this mean?

I don't want to hurt our batteries, they are supposed to last us a wee while. Any advice is much appreciated!

Re: please help with conflicting settings, mate vs. charger

Posted: Wed Jan 15, 2014 5:17 am
by blackswan555
All I can say about your batteries is "be careful" as for your question, It seems you are looking at two different components, The FM solar charge controller
The charger itself
and
The mate says adv/FX/charger absorb 57.6
The FX, Which is the inverter ( you can access both through the mate )

Tim

Re: please help with conflicting settings, mate vs. charger

Posted: Thu Jan 16, 2014 12:14 am
by zuessdoggg
Hi Tim,
Yes, I'm looking at the charge controller settings through the physical charge controller & the inverter settings through the mate. Should they not be set the same? Outback supplier ( not outback) told me to put these directly into the cc and in the mate under inverter. But shouldn't (or should) they be the same? If they are different things? Thanks, Cassie.

Re: please help with conflicting settings, mate vs. charger

Posted: Thu Jan 16, 2014 6:13 am
by blackswan555
:grin: OK As I said, I know nothing about your battery's, So I can not comment on the actual "Numbers" But I can give you some general answers,

A, Yes they should be the same (There can be a variation in some systems at an advanced stage, But generally not)

B, Again I do not know your batteries but "normally" you would not use float for generator charging ( waste of fuel, set time to 0)& you would use a longer absorb on solar than gen ( solar is "free"....)

C, Re-float is more for UPS type systems that sit charged for days/months/years, I have never used it in a RE environment so can not comment.

D, Not sure on your settings/batteries, I would recommend talking to OB/ Bat manufacture, Your batteries are "unusual" & I would be very careful with this setting (It is temp compensation)

Tim