Alternator question

sailorman said:
No, as the amps are high.
it senses what the batteries will accept, as the voltage rises & the amps drop off
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The Adverc cycles the charge voltage between 14.0 and 14.4, but only once the charge voltage has reached 14.0v. At the time you took your pic, the Adverc wouldn't have been doing anything.
 
pvb said:
No, it doesn't. If you fit the smart regulator to the new alternator, it will definitely not "burn out" as your so-called electrician suggested. However, modern alternators have regulators set at a higher voltage than in olden days, and you may find that the new alternator is already putting out 14.4v or so, in which case there'll be a much smaller benefit from fitting the smart regulator. As you only have 2 x 85Ah batteries, I'd propose that you should try the system first and see how you get on.
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+1.
My Beta, installed 18 months ago, also puts out up to 14.4V. I'd be inclined to suck it and see.
In your position I'd have gone for the larger alternator/polyvee belt option, but then (like most of us) I have a very effective charge booster for my hindsight wiring.
 
sailorman said:
Prior to fitting the adverc i had never seen that charge level
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Trust me, the Adverc's not doing anything at that voltage. Did you read the notes on the installation instructions? They tell you exactly what it does. Of course, your Nasa battery monitor could be incorrect, not exactly unknown.
 
I have no experience of Advercs, but the combination of only 13.5 v. alternator voltage and 37 amp. charge surprises me, even for a very discharged battery. I would expect any alternator to be showing over 14 volts.
How big is the battery bank, could the monitor be showing an incorrect voltage, perhaps because of some voltage drop due to the high current?
Just wondering!
 
earlybird said:
I have no experience of Advercs, but the combination of only 13.5 v. alternator voltage and 37 amp. charge surprises me, even for a very discharged battery. I would expect any alternator to be showing over 14 volts.
How big is the battery bank, could the monitor be showing an incorrect voltage, perhaps because of some voltage drop due to the high current?
Just wondering!
Click to expand...
330ah domestic
110ah engine
with a vsr
 
As the OP, I guess its ok to move it sideways a little...

After a 9 hour cruise under motor today, I was a little surprised to see the digital volt meter still showing 14volts at the end. If the fridge and other electronics weren't on, it would've been higher still. Could the alternator be 'overdoing it' a little? Cranking battery is so called 'maintenance free' so don't know, but domestic (wet cell) levels seem fine.
 
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