Quote:
Originally Posted by Taranwanderer
Lou, if his camper was designed to have a battery and it doesn't, isn't his converter "seeing" a low 12V DC situation (perpetually) and trying like hell to charge something that can't be charged? If so, that's probably pulling a boat-load of power from the 120V AC side of things and could be why there doesn't seem to be enough power for the air con...yes?
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There is a big difference between a "low" battery and "no" battery. A "low/dead" battery shows up as a high current short circuit and the converter will drop off line to protect itself. NO battery will just show as an "open".
In fact when testing the output during troubleshooting, the battery is removed. See the troubleshooting section in the WFCO manual (attached).
"Designed to have a battery in the circuit" is correct. However it is used to buffer heavy draws on the 12 volt circuits to prevent overworking the converter. He asked "if a battery was needed" is a seasonal site and the answer is "no".
The corollary is that without one, all 12 volt power must be made by the converter and heavy draws will shorten the life of the converter without a battery "sink" to draw from during times of high draws.