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Recommended RC7GS settings for charging

kbehrent
Explorer
Explorer
I have XanTrex RV2012 2000W inverter and a RC7GS controller setup for auto starting my Onan generator. For batteries, I have (4) Interstate GC2-XHD-UTL 6V batteries (CAP-20: 232AH, ReserveCapacity25: 474 AH) wired in series/parallel to make 12V with a capacity of 464 AH (If I calculated this right).

Are my following RC7GS settings correct and/or optimized for longer batt life?

Search Sense: 5W (I'm thinking of setting this to higher to maybe 30W)
Auto LBCO: On
Batt Type: Liquid Lead acid
Battery Capacity: Auto (Should I manually set this to 1000???)
Charge rate: 100% of max (Should this be lowered to 90%??)
External Shunt: This inverter
Fuel gauge cutout: 11.8 VOC = 0% SOC
Generator Start: Auto at 50% SOC
Generator Stop: Auto at Float

Also, I've never performed a "Equalization' and I'm not sure when to do it. We just got back from a trip and the motorhome is plugged into A/C and the RC7 reports that the batts are fully charged and in float charge state. Can you initiate a "Equalization" charge while in this float state or should I wait until the batts are depleted and charging to initiate this state?


Thanks
Kevin & Angela Behrent
2 grown kids (Dylan, Max), Dog (Roxy)
2005 39' Newmar Kountry Star DP (KSDP3907) - Triple slide
2003 Honda CRV - Toad
FMCA #: 355250
2 REPLIES 2

kbehrent
Explorer
Explorer
BFL13 wrote:
Not answering all, but do note your four 6s are probably in series/ parallel for 12v and 464AH.

IMO set your capacity at that 464. Your charger can do ISTR 100amps if not limited by another setting, so unless you are short of 120v amps when plugged in or on generator, use it all and get the 100 amps going at the battery bank. (That is not too much on 464AH)


Nice catch on the capacity, you are correct that they are in series/parallel. Not sure now whether to set the Battery Capacity on the RC7 to 500 or Auto. Not sure how good it is on detecting capacity correctly.
Kevin & Angela Behrent
2 grown kids (Dylan, Max), Dog (Roxy)
2005 39' Newmar Kountry Star DP (KSDP3907) - Triple slide
2003 Honda CRV - Toad
FMCA #: 355250

BFL13
Explorer II
Explorer II
Not answering all, but do note your four 6s are probably in series/ parallel for 12v and 464AH.

IMO set your capacity at that 464. Your charger can do ISTR 100amps if not limited by another setting, so unless you are short of 120v amps when plugged in or on generator, use it all and get the 100 amps going at the battery bank. (That is not too much on 464AH)
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.