Are the new WFCO's as bad as the old ones?
Our old trailer (2007 Komfort) had a WFCO 8955 converter in it, I could NOT ever get it to go into bulk mode, not even when I moved it within a few feet of the batteries, tried everything. I did a th...
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Fisherguy wrote:Grit dog wrote:Boon Docker wrote:
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Apologies, I quoted you but wasn’t questioning your response.
It was in reference to the OP who is planning to idk, stack converters.
And furthermore he doesn’t even know if his current converter is doing the job or not.
Stack converters?
We've had this trailer a whole 2 weeks and it's the middle of winter here so excuse me if I don't have any 'real world' experience with it yet and am looking for advice!
I said I'd probly leave the WFCO in place as a back up on it's own breaker and add another charger up closer to the batteries.
Is that OK with you?
Ok Fisherguy, from an earlier post I saw you have volt/amp guage. If you can run your batteries down 30-50% SOC then you can monitor recharge amps and volts. IF your charger is charging at 14.4-14.6 volts with 50-60 amps, more than likely that's a lithium profile. IF your readings are more like 13.6-13.8 with lower amps, that's a FLA curve. Some Flooded curves will start over 14 volts and drop after an hour or so. Lithium will hold over 14 volts for as long as it takes to recover SOC. Depending on how many amp hours it needs to put back in the batteries. Most lithium battery makers use prismatic cells @3.2 volts. 3.2x4=12.8 volts. MAX charge per cell is 3.65 and 3.65x4=14.6. Lithium charge curves stay flat for most of the charge cycly then ramp up voltage sharply at the end. This is not charging voltage, this is state of charge voltage. The BMS is should be a 50 or 100 amp which is what charge/discharge current you can run through it. I wouldn't replace anything until you have an idea of your WFCO charge curves/amps etc. Run through a few charge/discharge cycles and see if you actually need more than what's there. And you can also do this using the Honda generator as well. Also as the batteries get closer to 100% SOC the charging amps will drop. Aso, the batteries BMS will stop the charge cycle when the batteries are full and cell balancing will begin. Lithium battery cells don't like too much variation between cells.
