Quote:
Originally Posted by Lamokadave
So I finally had a chance to dig in to this a bit.
The premise here is Im considering a swap out of the WMO 9855 converter non lithium to something that supports lithium.
With some amount of difficulty I was able to pull the current deck mount converter. Im hoping some of you can help me understand what Im looking at.
As stated earlier, the converter circuit in the power center is a 15 amp breaker
The converter actually plugs directly into the back of the power center and has a single 6 awg red and white wire leaving it. I expected 2 of each with one headed toward the batteries and another powering house 12v systems. The white is routed directly to a neutral buss and the red goes back into the power center. In the same place the red enters the PC, another red exits and heads toward a device with a small circuit board and what looks like a couple of fuses. The red leaves that and heads into a very busy distribution device. At least one bundle of wires appears to connect to something labelled Vega so Im assuming part of the firefly system I dont really see any larger qauge wires that might head toward the batteries. So at this point, I dont know how the batteries are being charged. I've had no luck trying to trace things underneath as bundles of wires disappear between the frame members and coach bottom
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Was hoping I would have had some help with this at this point.
Anyway, I did install the Progressive Dynamics 9160L converter and see the following results.
I now can push 33 to 36 amps into the batteries vs 15 with the WMCO 9855 device. Charging voltage still sits at 13.3 to 13.5 vs the expected 14.6. I'm going to be working with both Renogy and Progressive D to figure this out. I"m not ready to assume wire gauge because even prior to installing the new batteries I used 2 different lithium capable charging devices and noticed charging voltage was in the low 13v range. Also while dry camping and relying on solar, the charge controller only showed 13.3-13.5 volts and that's within 18" of the batteries.Appears that the batteries themselves might somehow limit incoming voltage. I do want to get the charging current close to the rated 60 amps
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