system has been very reliable for the last four years when we started our circumnavigation
but a problem has arisen that I can't figure out.
To charge our house bank of eight Trojan T-145 6-volt golf cart batteries (slightly over 1,000 amp hours at 12 volts), we have the following systems:
1. Single-cylinder Kubota 6-horsepower diesel
that drives a 150-amp Delco Remy alternator
with a Balmar
2. Our Kubota has two alternators, a 100-amp and a 175-amp. The 100-amp just charges the starting battery
and the 175-amp is wired to the house bank.
3. A brand new Victron Phoenix MultiPlus 12/3000/120 inverter/charger.
4. Two Kyocera
235-watt solar panels
with a Morningstar MPPT
About two months ago, we were anchored out and I was looking at our Xantrax LinkPro battery monitor
and I said to my wife, "The genset is running great!" And precisely at that moment, its output fell to zero amps (that should teach me to keep my mouth shut). We sent the alternator
in for repair and when it came back, it would start to output its full rated amount but would quickly taper down to 50 amps or so.
What is odd is that our 175-amp alternator on the Kubota is doing the exact same thing. And our brand new Victron will only output about 60 amps when it should be twice that. Our solar
panel appear to be working normally.
At first, I presumed it was the batteries so I removed each battery cable and tested each battery independently with a battery load tester. Sure enough, one battery was bad so we replaced it with a new one of the exact same model as the rest (no small feat in Thailand). We still have the same problem. I have cleaned and tested all of the connections and all of the cables
Whereas I don't like to admit it, we are power hogs and we easily go through 400 amps in a day (please, no lectures about this - I know how to solve that problem but the solution is completely impractical here and now). We are scheduled to start our passage
across the Indian Ocean
in about three weeks and our electrical
usage goes up with the running of the autopilot
. Any help would be greatly appreciated.
Fair winds, calm seas and Happy New Year.