Power Converter
My new 36ft 5er has a WFCO WF-9865 65 amp power converter. It has an input of 105-130 VAC, 1260 W; output is 13.6 VOC. The charger is 3 nominal voltage output modes: 13.2 Vdc "float" mode, 13.6 Vdc "a...
Forum Discussion
I did some measuring in the WFCO 8955 with an IR temp probe. The bodies of the power resistors get up to 250 deg F, and the bases at the circuit board go to 210. This isn't even close to melting the solder but leads to fatigue cracks in the solder and damages the circuit board over time. I tried a clip-on heatsink and it helps, bringing the base of the resistors down to 180. I wouldn't trust the clip-on heatsink to stay in place in a bouncing RV, so it's not a solution. This particular converter is retasked as my battery charger, so the heatsink should help prolong its lifetime.
