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Old 02-12-2020, 08:54 PM   #15
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I have a 160 amp alternator with regulator set to 14.1. Tried charging my 20% SOC LI house batteries through a diode isolator. Because LI will take a high charge rate, alternator worked very hard charging, and within about 20 mins, alternator frame was about 240 f. before I disconnected the house batteries. This is why the DC to DC converters are good, they not only supply the proper voltage, but also limit the charge rate.
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Old 02-13-2020, 07:53 AM   #16
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Originally Posted by vito.a View Post
The large Monaco coaches come with a Leece-Neville 270 amp alternator that is quite capable of charging the house battery bank.
Current (amps) has nothing to do with charging a depleted house bank IF YOU DO NOT HAVE ADEQUATE VOLTAGE !

A DC-DC charger boost low voltage and then does a proper multi-step contolled charge.
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Old 02-13-2020, 07:56 AM   #17
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I have a 160 amp alternator with regulator set to 14.1.
An adjustable voltage regulator is NOT very common !
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Old 02-13-2020, 11:23 AM   #18
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An adjustable voltage regulator is NOT very common !
Have had 4 Fortravels and 1 Newell with common Leece Neville alternators, and all were adjustable.

http://www.prestolite.com/Prestolite - Leece Neville
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Old 02-20-2020, 06:02 PM   #19
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My plan on my 2000 Monaco Dynasty is to use the salesman switch to control the charging of the house bank.

First, I will by-pass the original continual usage solenoids by moving the red power wires to the same side and removing the switch wires.

Then I will add a new 200amp continual usage solenoid and reuse the wire to run this one. Then the 4/0 wire that goes from the battery isolator to the house side, I will interrupt with the new 200amp solenoid.

That way I (really the co-pilot) Controls when the alternator is charging the house batteries.
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Old 02-26-2020, 11:04 PM   #20
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Originally Posted by Rocketman3 View Post
My plan on my 2000 Monaco Dynasty is to use the salesman switch to control the charging of the house bank.

First, I will by-pass the original continual usage solenoids by moving the red power wires to the same side and removing the switch wires.

Then I will add a new 200amp continual usage solenoid and reuse the wire to run this one. Then the 4/0 wire that goes from the battery isolator to the house side, I will interrupt with the new 200amp solenoid.

That way I (really the co-pilot) Controls when the alternator is charging the house batteries.
What happens to the alternator and all the electronics if you abruptly disconnect the load while it is putting out 140 amps? Usually everything will fry from a very high voltage spike. The field has to shut down first under a high load.
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Old 02-26-2020, 11:55 PM   #21
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I figure the current will drop into the chassis battery, because that will still be connected through the battery isolator.
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