A little summary:
The fuses are definitely 30a, this I do know for sure.
here's a pic of a pm4-55:
https://www.advancemcs.com/sps/auto-accessories/converters/sp_7455/PM4-55
It appears my pm:
- is labelled as a 75a (I will confirm the exact labeling later today).
- has the input current of a 55a (16.5v x 55a / 120v @ 85%eff is 8.9a. I read about -90a on the inverter with the pm turned up full.)
- has the output current of a 45a. (has never gone over 46a, and usually tops out at 45.6a)
The manual says:
" TEST.
First, disconnect all loads and battery on the Converter/Charger by
removing all 12 VDC connections from + or POS. Second, attach a multimeter instrument between the positive and negative terminals of the onverter/Charger. Then energize the 120 VAC converter circuit. Test for proper output power using the multimeter. Measure the output voltage from the positive and negative terminals. The voltage should read 13.6 +/- 0.2 VDC. "
Before the mod, mine produced 14.6+ volts no load, not 13.6. So it failed the no load test. And to confuse matters even more, many spec sheets say the no load voltage is the three charging set points.
... This charger is truly one of a kind!
