175 amp alternator on SM-burned up battery bank.
I saw on my spare 175 amp alternator that is has a label stating for use on
Cummins diesels are used in commercial trucks and power plants. My
alternator fellow ( second generation) says that a constant output of 28.5
volts is not a problem as trucks run for days and power plants work for
months without burning up their battery banks.
I will stick with Amels original idea of the stock alternator. As I
previously said, I had no problem with it for 4 years and I motored a lot. I
believe my problem is the charger.
I get new batteries Monday and will keep you posted. I also leave the boat
hooked into shore power for weeks at a time some times. I believe that was
part of my problem. I am discontinuing this practice.
Amel Super Maramu #376 Kimberlite
[mailto:amelyachtowners@...] On Behalf Of seafeverofcuan
Sent: Thursday, June 06, 2013 10:24 AM
Subject: [Amel] Re: 175 amp alternator on SM-burned up battery bank.
Dear Alan and Richard,
Thank you both for you help. I now have a reply from Dolphin stating that my
original chargers are fine but suggesting that things have moved on and
promoting their Dolphin Pro series!
Specification and information on Leece Neville alternator regulator model
8RL 3021 has proven impossible to find other than the manufacturer upgraded
them from 2006 to stop customers self adjusting them.
In the final analysis I am always reluctant to change anything that was
designed and fitted by Amel. I think that Richard is correct with upgrading
to a smart charger when availability finances allow and replacing with lead
--- In amelyachtowners@...
<mailto:amelyachtowners%40yahoogroups.com> , "alan_leslie_elyes_sm2k"
that I think there is a problem re gassing the batteries and ultimately
But WHY your alt puts out 28.1-28.6V is a bit of a mystery when thestandard internal reg is set for 28.8
docs would be different...its really a case of whether or not the charger
can keep up with the load imposed on it.
Maramus...well...my only thought is that they didn't understand well how
batteries need to be charged
for long periods...like I did..54 hours last week.
"bad" information out there.
batteries, in different boats and I think I understand the best way to do
it...and that is DEFINITELY NOT to have a 28.8V internal reg in the
have, properly !
<mailto:amelyachtowners%40yahoogroups.com> , "seafeverofcuan"
are now at the bottom of The Sea of Cortez and hope to get some good
technical help in Mazatlan next week. For now we are running on four
remaining house batteries. The alternator has been putting out between 28.1
volts to 28.6 volts the remaining batteries have not overheated.
charger should boost at 27.7 volts and float at 26.5, the 100amp boost 28.8I have the original Dolphin instruction paperwork from 2004. The 30amp
and float at 27.2.
boat) stateHowever both pieces of paper ( and that is literally what came with the
requirements equal 50% of the charger rated output"
giving 630 amps at 24 volts then the 30 amp reverts to boost when the
batteries drop below 97% of total capacity.
advice and haven't had a reply as yet.
smart charger and of course a new set of batteries. From everything that II suspect the answer lies in a total replacement of both chargers with a
have been reading, common sense would indicate AGM and completely disconnect
them when leaving the boat for long periods.
be heavily influenced by what is available in Mexico.The entire subject is a black art and I suspect in my case choices will
<mailto:amelyachtowners%40yahoogroups.com> , Sailorman <kimberlite@> wrote:Best regards,
regulation.owner showed me what happens as it runs. There is no internal
theHowever he said as the battery becomes more charged the resistance of
abank increases and the alternator puts out less and less amps . It has
regulator is aconstant output of about 28.5 volts. He said the Balmar smart
for 4waste of money -and he sells them.
charger. Iyears. I only changed the batteries after a lightning strike.
<http://www.spamfighter.com/len>will test it when I get my new batteries next week.
Try a free scan!