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Old 01-31-2014, 05:25 PM   #1
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converter amp output?

I have rock wood 2304S and wondered if anyone knows the maximum amp output of the converter? Curious how long I typically need to run gender to recharge a battery at 1/3 capacity.
Thanks
Mike
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Old 01-31-2014, 05:41 PM   #2
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Originally Posted by boatnut View Post
I have rock wood 2304S and wondered if anyone knows the maximum amp output of the converter? Curious how long I typically need to run gender to recharge a battery at 1/3 capacity.
Thanks
Mike
Make and model of converter?

Also it'll greatly depend on usage in between charges.

Most likely this is what you have.
http://www.wfcoelectronics.com/UI/Po...?ptype=3&pid=9

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Old 01-31-2014, 06:43 PM   #3
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that appears to be the one. 55 amps is a lot but I'm sure it tapers off quickly? So any idea how long I should run gen to fully charge a typical deep cycle battery? roughly?
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Old 01-31-2014, 07:33 PM   #4
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Originally Posted by boatnut View Post
that appears to be the one. 55 amps is a lot but I'm sure it tapers off quickly? So any idea how long I should run gen to fully charge a typical deep cycle battery? roughly?
When we boondock I normally run ours for 3 hours.
Right or wrong it works for me.
I also have 2 batteries.

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Old 01-31-2014, 07:36 PM   #5
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OK thanks!
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Old 01-31-2014, 07:43 PM   #6
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between 2 and 4 hrs...depending on what condition the battery was to begin with..

my converter has a blinking led to indicate what stage of charge its running (its a 3 stage charger)

i just watch the light and when it goes steady i shut the genny off......
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Old 01-31-2014, 08:16 PM   #7
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A 3 stage converter can take up to 3 days on campground/generator power to recharge a depleted deep discharge battery.

The reason is as the stages step down charge rate to prevent boiling of the battery, the amperage available drops into the milli-amp range.

Here is a graph showing why that happens.

In "BULK" stage 1 - a depleted battery has plenty of surface available to take electrons and can absorb them at a high rate (upwards of 20 amps at 14.4 volts). If the charger maintained this high rate, the available surface area would clog up as it takes time and power for those electrons to be pushed deeper in the thick lead plate of a deep discharge battery. BULK can only be maintained to about 50% capacity (about 4 hours of charging) or the excess amperage would be converted to heat and the water/electrolyte would be boiled from the battery. As the "surface" voltage increases, the converter detects this and steps the charge rate down to "ABSORPTION" Stage 2.

In Stage 2 (ABSORBTION), the voltage drops to about 13.6 volts and amperage drops to about 2 amps. This is the NORMAL mode of your converter. It will charge the remaining 50% and run all your 12 volt DC camper items. It can take upwards of 24 hours to charge the battery to 90% of capacity depending on how much other demand is on the converter (furnace etc).

If the RV is in an essentially "No Load" condition and the battery is above 90% of rated capacity, the converter will switch to stage 3 or "FLOAT" mode. In FLOAT, the output voltage drops to 13.2 voltage and will trickle charge (about 500 milliamps to the battery plus camper parasite draw) to replace the remaining 10% of capacity. Any demand on the RV will automatically switch the converter back to stage 3 and the voltage will ramp back up to 13.6 volts.

To return a 12 volt deeply discharged battery to 100% can take 3-5 days on external power depending on RV DC usage at the time.

Discharging a deep discharge battery below 50% will result permanent damage to the plates and permanently reduce the maximum capacity of the battery.

Recharging when the battery drops to about 80% capacity. (The "GOOD" light just goes out is 50%!), will result in the best battery life of these expensive batteries.
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Old 01-31-2014, 08:52 PM   #8
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Yeah...what herk said...lol...and it aint hard to beat down a std group 27 bat when its cold and the furnace is working!

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Old 02-07-2014, 12:33 AM   #9
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The new converters have a bulk charge button in the fuse panel location. If you have your book it explains it there. You can manually put it in bulk charge mode.
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Old 02-07-2014, 06:23 AM   #10
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The new converters have a bulk charge button in the fuse panel location. If you have your book it explains it there. You can manually put it in bulk charge mode.
That is true with a progressive convertor but I did not know that WFCO added a charge wizard? When did they start doing that?
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