I have the famous WFCO converter charger in my Rockwood Windjammer.Over the weekend we camped 4 days on 2 golf cart batteries. With quite a bit of furnace use we got down to 12.1 volts. When we got home and plugged in the voltage at the battery went to 12.9. We left after about 10 minutes but shouldn't the charger have gone higher than that? How long would it take to charge the battery at that voltage?Linc

at 12.1 volts the batteries are very low the charging time will depend on the charging rate of your converter. but 10 minutes is not even close to being long enough.imho

Lspangler wrote:How long would it take to charge the battery at that voltage?12 hours

That model charger rarely will go into boost mode, 12.9V was all it could put out based on the amp draw and voltage loss.

What exactly do you think the WFCO is famous for? ;)You also have close to 0.7 volt drop in the wire from converter to battery :(Pull some #4 along with installing a new converter.

Your WFCO is not going into boost must likely due to too small and to long a wire run to batteries. Like somebody else said run some much heavier wire, as heavy as will fit in the WFCO connectionsI'm on of the lucky ones with the WFCO. Mine actually goes into boost quite easily if the batteries are low but my wire run is only about 5' and came from the factory with #4 wire.

WFCO 8955 question | Good Sam Community

red31
Explorer
Jun 16, 2014
hmknightnc wrote:

Mine actually goes into boost quite easily

Does it stay there until the batteries are charged?
Lspangler
Explorer
Jun 16, 2014
The plugged in voltage at the battery was 13.2 when I picked it up thursday so I would have expected it to go higher than that when first plugged in.

My plan is to upgrade the wire and the converter soon. I just thought it was odd that it only went to 12.9

Linc
hmknightnc
Explorer
Jun 16, 2014
Your WFCO is not going into boost must likely due to too small and to long a wire run to batteries. Like somebody else said run some much heavier wire, as heavy as will fit in the WFCO connections

I'm on of the lucky ones with the WFCO. Mine actually goes into boost quite easily if the batteries are low but my wire run is only about 5' and came from the factory with #4 wire.
time2roll
Nomad
Jun 16, 2014
What exactly do you think the WFCO is famous for? ;)

You also have close to 0.7 volt drop in the wire from converter to battery :(
Pull some #4 along with installing a new converter.
AH64ID
Explorer
Jun 15, 2014
That model charger rarely will go into boost mode, 12.9V was all it could put out based on the amp draw and voltage loss.
2oldman
Explorer II
Jun 15, 2014
Lspangler wrote:
How long would it take to charge the battery at that voltage?
12 hours
snapper388
Explorer
Jun 15, 2014
at 12.1 volts the batteries are very low the charging time will depend on the charging rate of your converter. but 10 minutes is not even close to being long enough.imho

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