Different question on wfco
I have a year old rv with 2 interstate cg2 232 amp hr batteries & had a 55 amp amp wfco converter. I called Randy @ best converters & asked about charging my batteries without running the generator al...
Forum Discussion
cdcorpe wrote:
The label only says pmpc 75 amps. I know what you are asking & I ordered a 4 stage charger the 3 stage was cheaper. I ran the batteries down to 12.5 & waited 45 minutes to see if the volts moved up, they stayed at 12.5 so I started the test & yes it dropped from 74 to 35 after 15 minutes volts never changed 13.05 to 13.2 . No I have never equalized them they are about a year old & my solar keeps them topped off ( No solar for the test)
Right so you started at 12.5 which is about 75% or so. The unit did exactly what it is supposed to. You have some voltage drop between charger and battery, so the charger thinks the battery voltage is higher than it is, which is why you are only seeing 13.2 at the battery.
You need to get the batts down to an actual 50% SOC proven by voltage and SG, connect the charger with short fat wire to the battery, then see it get the batts to 14.4 or so (the latest PMBCs go to 14.8 but earlier ones went to 14.4) before amps taper.
The PMBC (your pmpc is a typo I assume)is the "car charger" power supply and is not meant to be a converter at all. It should act like a deck mount converter though, reading its specs, but I am not positive.
