Should I Change My WFCO Converter?
Opinions have often been expressed, both on this and other RV forums, that most stock RV converters are inadequate to properly charge and maintain batteries and are often of poor quality. It is frequ...
Forum Discussion
jrnymn7 wrote:
Niner,
You see the MegaWatt holding steady at 40 amps for quite a while? That's well above its rated duty cycle. Wow. And did this change after doing the fan mods?
I see my 30 amp unit pulling 33 amps if my T 1275 is at a 40 to 50% SOC, yes. For 30-40-50 minutes, then it starts having battery chemistry drop off to 27, where it will sit and slowly decline, over another hour. Might be at 18 amps after 2 hours. The batteries only take high amps if you give it to them with voltage at 15.0V. No harm is done to the battery, chemistry and SG of the acid controls the take rate. Provided your battery is being stirred and is not getting hot, everything is fine. 15.0V at the PSU is not 15.0V at the batteries. Might finally get to 14.8 or 14.9, and amps to 12, then it's time to shut the generator off and finish with the solar panel. If your PSU is charging at a c/15 rate, in my opinion, if your PSU will provide the amps, it's time to save gas and shut the generator off, and let the slow charging solar panels take over and do the top charge portion.
If you have 225 Amp hours of battery capacity, if set at 15.0 V, by the time a PSU with fat wires is showing 15 Amps being taken as the charge rate, time to shut the generator and PSU off, and go solar for the last bit. You could even quit at 20 amps and let the solar do the rest if you have enough watts in your solar system and a sunny day to work with.
