Forum Discussion
pnichols
Aug 28, 2016Explorer II
Don,
My Ford E450's 130 amp alternator every once in awhile spikes to over 60 amps (I saw 70 amps, once) when I run my two paralled 12 volt 115 AH Group 31 Fullriver AGM coach batteries down too much. I monitor the Fullriver batteries while going down the road with a voltmeter and ammeter for them that I mounted on the cab dash.
I also have a voltmeter on the dash for the engine battery/alternator system. When this voltmeter does not closely match the coach batteries' voltmeter, I know that the alternator-to-coach-battery automatic interconnect solenoid is bad. This has happened twice to me, now, in 10 years. I hate arriving at a campsite to find that the coach batteries haven't been topped up by the alternator!
I prefer to keep an eye on things in order keep surprises to a minimum.
My Ford E450's 130 amp alternator every once in awhile spikes to over 60 amps (I saw 70 amps, once) when I run my two paralled 12 volt 115 AH Group 31 Fullriver AGM coach batteries down too much. I monitor the Fullriver batteries while going down the road with a voltmeter and ammeter for them that I mounted on the cab dash.
I also have a voltmeter on the dash for the engine battery/alternator system. When this voltmeter does not closely match the coach batteries' voltmeter, I know that the alternator-to-coach-battery automatic interconnect solenoid is bad. This has happened twice to me, now, in 10 years. I hate arriving at a campsite to find that the coach batteries haven't been topped up by the alternator!
I prefer to keep an eye on things in order keep surprises to a minimum.
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