Recently I started the diesel
(volvo d2-55) and got a battery
warning. The alternator
(standard 60Amp) was putting 13V out on the engine
display when normally it's 14V (ALWAYS). When I idled to 2000rpm the output rose to 16V. I have a 3x4d gel house bank (550Ah) and 1x4d gel start batt, so I shut down for fear of flying the batteries.
I'm guessing the internal regulator
is shot, hence the varied V output???
The Link 2000 was showing 0-30 amps jumping all over the place (usually it's 60).
The boat is relatively new to me and I'm still learning
the systems, like how exactly are my batteries charged but here is what I know. From the alternator
the + runs to a split, from which it goes to the Start batt, and to the inverter
(then to the xantrex 110V charger
??? for the house batteries)
Everything has been working well so far, and I've never really had a problem with the batteries but I also never had to charge the batteries via the Diesel
I'm now faced with what to buy;
- new internal regulator
-$280 from Volvo
- New external regulator - $300 form Bomar
(can I hook it up to the old alternator???)
- new HO alternator with ext. regulator - $800
I'm planning on cruising the boat for a month in may, and would like to be self sufficient on power (ie. no portable generator
if I can help it and I have no solar/wind)
Also, had this happened on the water
and I needed to motor
for an extended period, what should I do? disconnecting the alternator is the best idea but how to do it without frying anything?