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
Good info from Randy. To clarify, was that for the adjustable 75 amper being PFC? I assume all the PMs of every size and model have upgraded thermistors now from what he said there.
So there is no need to spook folks who might want a PM product about that anymore. If you have an older model PM3 and are worried, you could take the lid off, note the thermistor (called RT1 on the circuit board near where the 120v comes in) by its number on it, and then find out from PM or Randy what the new ones have to see if it is a different thermistor.
If you have a smaller thermistor than the latest version has, then you should be ok as long as you avoid hot restarts and connect to the battery first before turning on the unit's 120v input. (turning on first lets the thermistor warm up and lose its value against inrush, then as you connect to battery you get the big inrush and no thermistor protection---oops)
That only applies to using the unit as a portable charger. When installed like a converter you are already connected to battery when you power on.
So there is no need to spook folks who might want a PM product about that anymore. If you have an older model PM3 and are worried, you could take the lid off, note the thermistor (called RT1 on the circuit board near where the 120v comes in) by its number on it, and then find out from PM or Randy what the new ones have to see if it is a different thermistor.
If you have a smaller thermistor than the latest version has, then you should be ok as long as you avoid hot restarts and connect to the battery first before turning on the unit's 120v input. (turning on first lets the thermistor warm up and lose its value against inrush, then as you connect to battery you get the big inrush and no thermistor protection---oops)
That only applies to using the unit as a portable charger. When installed like a converter you are already connected to battery when you power on.
