RV Voltages too high while charging
I have a problem and have been wrapping my head around this for a few days. I have four 100w Solar panels, and a Morningstar RJ-45 programmable charge controller wired to batteries. I have Four In...
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This is from Interstates Charge specs for their batteries:
Per mfr directions you miltiply these values by the number of batt's in series. (For me two)
GC2-XHD/HD/RD
BULK: 7.2 (14.4)
ABSORPTION: 7.65 (15.3)
FLOAT: 6.7 (13.4)
EQUALIZATION: 7.8 (15.6)
Their 12VGC batteries are higher for absorption 15.5
If they are working for others just fine at 14.8 then thats the money maker for me... I'll check their SG after a few good runnings and chargings to see how they are doing!
jolooote: Solar is definately an adventure and not just... oh i'm going to buy a couple panels at Harbor Freight and I'll be good. 'Cheap' isnt an option and just creates more issues than anything else.
The biggest problems are start up costs.
People who have factory / dealer installed panels often complain they are not enough and add more panels. I would bet 9 times out of 10 changing the wire's to a lower gauge and/or a better charge controller would fix their 'lack of power.' Wire runs too long, and/or gauge too high #1 reasons for voltage loss!
With my 400w, I get about 22 amps/hour at peak.
Per mfr directions you miltiply these values by the number of batt's in series. (For me two)
GC2-XHD/HD/RD
BULK: 7.2 (14.4)
ABSORPTION: 7.65 (15.3)
FLOAT: 6.7 (13.4)
EQUALIZATION: 7.8 (15.6)
Their 12VGC batteries are higher for absorption 15.5
If they are working for others just fine at 14.8 then thats the money maker for me... I'll check their SG after a few good runnings and chargings to see how they are doing!
jolooote: Solar is definately an adventure and not just... oh i'm going to buy a couple panels at Harbor Freight and I'll be good. 'Cheap' isnt an option and just creates more issues than anything else.
The biggest problems are start up costs.
People who have factory / dealer installed panels often complain they are not enough and add more panels. I would bet 9 times out of 10 changing the wire's to a lower gauge and/or a better charge controller would fix their 'lack of power.' Wire runs too long, and/or gauge too high #1 reasons for voltage loss!
With my 400w, I get about 22 amps/hour at peak.
