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I have the Blue Sea 1732 and shunt and a 1733 voltmeter for a solar rig, and don’t have a DC capable clamp-on:) a DC clamp should work fine and would be easier, but the shunt was simple enough General said the C7 ECU was good for 1.1A, not sure what the MMDC/gauges pull, but i suspect not a...

Ok, got around to load testing the 24v on my A0 this afternoon. 24v only feed to the cab with a blue sea amp meter and 100A shunt in that line. ignition on 6A start and idle still 6A. About the time the air tanks went over 66PSI and the buzzer stopped, it dropped to 3A. I dumped some air and...

100w is 7.7A all by itself:)

Oh yea, LEDs would be a fraction of the load… I totaled up wattage once and came up ~27A for all the lighting on a 1078. Its over 30A on a 1079…

yep, lead acid capacity drops off steeply with temp, but not as steeply as lithium:) At 20F a lead/acid only has ~75% of its rated capacity, and that is its current rated capacity IF fully charged. An older battery will have a lower capacity to begin with. if you were going to make a habit...

Yes, thats correct. The batteries set the tune and draw energy based on relative voltage difference and their internal resistance. Thats why AGMs want more, and can deliver more current. Tgey have a lower internal resistance. That is why you cannot just hook up any old alt to a LI battery...

Charging is based on voltage output, and alternators typically dont care about state of charge, they only know output voltage. So battery is low and you give it enough voltage it draws current this causes alt voltage to drop, its reg builds the field and makes more output trying to get back to...

that reg has an ign input so can be easily remote controlled How big is your service battery? ok Lithium changes the game for house charging. Must have a dc-dc charge controller, and you can tailor that to whatever excess your alternator will support. You could have 2000AH back there, but...

They may not be capable of remote conttol, depends on the alt. Got a model number? The LMTV is unusual in that regard as remote generator control is usually an aviation thing. Most automotive alts do not have it, if they're turnin, they're burnin:) 140A@24v is a lot of power. How large are...

Yea I think you are remembering the numbers wrong. I think those are what that alt was capable of, 140A@24 and 60A@12. You don’t need a lot to make 12v from,24. The lighting load on a lmtv is 26A(33 on a 1079). thats only 13A@24v plus a little for converter efficiency. With standard lead...

@24, You don't really need a very high output alt. 100A @ 28V is 2.8KW of power. A 100A alt would easily feed the OEM 240AH 4 battery bank In standard lead-acid. In fact it would just barely be past full load(108A) to feed that same bank if they were AGMs. A 125-150A alt would be great…...

Sounds about right. If its a Neihoff you can get the troubleshooting guide from their military section. It should have a procedure for determining wether it is an alternator chassis or regulator fault. Depending on how available the humvee alts are,this sounds like a great time to swap to a...

So have you ordered your 24v alt and 24-12V converter yet? Now is the time to convert:)

Not quite. That 100AH rating was for a 20 hour discharge rate(they do other ratings like 5 and 10 hours, but a 20 hour rate is the norm), so for a 100AH battery that is a 5A Load. As you increase the load above that 20 hour rate, the battery drops in efficiency. Basically the added current...

Thats weird. I am thinking you had something else going on. Dropping power should not be catastrophic for the transmission. It directs hydraulic pressure to clutches with electric power to solenoid valves. When you drop power, these valve stop sending fluid to clutches. no clutches, no...

Batt voltage to gauge capacity is only good after the batteries are stabilized, so it is not particularly useful when a load is applied… y0u need to let the batteries set 30 minutes unloaded to allow the electrolyte to equalize somewhat, for that volt to state of charge table to be applicable…

It probably depends more on your charging capability with only 30 miles, perhaps an hour driving total? With 4 decent batteries, charged, you should have 240AH. The total lighting load is ~25A@12. Thats double the standard 20 hour rate(12A) that the 240AH rate was determined at, so peukert...