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Owning Lifeline AGMs and having tested lithium iron batteries, I would disagree with this, strongly. Lifelines may charge faster than flooded lead acid, but they are very slow compared to lithium. YMMV. (But, as noted, I doubt it. ;) )

Can't say, but it would appear to me that the issue is where you sense, not the B2B. It just wants to see more than 0v. So if you tap at some point that comes live when the key is "on" it will react. Tap at a point that is only live when the engine is actually running and only then will the B2B...

I have used both REDARC and Sterling Products. Both work, depending on your circumstances, one may be a better fit for your rig.

Yes, you can have any number of chargers on the same bank. I have three, the alternator though a REDARC, a solar controller, and shore power. Lead acid batteries do not have BMS. Each controller measures the battery voltage and tries to meet its own criteria. Each will come on or shut off...

Consider using ferrules. One of the RV solar gurus swears by 'em. Might make it easier to jam in a bigger wire and should make for a more mechanically sound join. Example: Amazon.com : wire ferrule kit

You are opening a can of worms here ... ;) But I'll play. -- Winter is a challenge due to cold and lack of sun. A week of clouds can be a killer. While I use an induction cooktop, for extended cold weather use a diesel stove (you can run from a dedicated kerosene tank) may be a better option...

Amps are important, but mostly as a measure of the performance of the system. The question was whether the Blue Sea ACR was working properly at all. It appears, from what can be gleaned from web posts, that it is. Beyond that, if you have an ammeter, then the actual amp flows would be most...

Depending on your alternator, count about one to two hours per 100Ah of camper battery, and then 30 minutes to one hour of absorb charge per 100Ah of battery. You should, however, see the voltage begin to rise in one to two hours.

Actually, they are. The Blue Sea ACR is merely a voltage sensing relay, or solenoid. When it is closed, it acts like a wire connecting the two batteries. Now, take two batteries, one charged, one discharged and connect them in parallel. The voltage across the circuit will be somewhere between...

It is working perfectly. The camper batteries draw down the voltage of the circuit and will continue to do so until they are charged.

For some reason, this did not post. Dave's comment above is even more complete. ==================================================================== Assuming this wiring: ML-ACRs.jpg (1479×1267) (bluesea.com) When the relay is closed, the voltage will be the same on both sides. If your camper...

You lost me - where are you measuring? There is only one large terminal for each battery. Engine running you should see something like: Alternator - 14v+ Starter battery - about the same, perhaps a bit lower. Camper battery - Who knows? The Blue Sea ACR should close, that is combine, when...

Thanks for the kind words. None of this is hard, but it can become complex. Now on my second expedition camper, first relay based, second with B2B, I have made a LOT of mistakes. The base information above comes from my old Overland EXPO slides, which can be found here: Documents | DiploStrat...

Some comments: -- It is probable that Overland are using a Blue Sea ACR or similar voltage sensing relay. These are a great solution assuming that your camper batteries and starter batteries are both grossly of the same type, eg., both lead acid. -- A voltage sensing relay does NOT charge the...

You'll only do that once!

Keep an eye on your Stazworks wheels. The bolts on all of mine snapped on the road with sporting consequences. (Note the ten missing bolts.) MB 917. And contrary to Stazworks' claims, the MPT 81 was NOT underinflated. (And there were broken bolts on all of the other wheels as well.)

Note, I said conventional. I have used an induction cooktop since 2013. Also had a diesel cooktop in the Tiger, but found it to be a bit of a pain. Of course, I have always had 600Ah. AGM today, Lithium Iron soon.

Had a Magnum Energy inverter/charger on my Tiger, have another on my XP. Both have worked for years and routinely handle microwaves, battery conditioning, and other tasks. Infinitely adjustable with the remote control. Would buy again. Inverter Chargers | Magnum Dimensions (magnum-dimensions.com)

Having had two inductions, I will only note that you need to be able to budget between 25 and 50Ah for a meal for two persons. That poses a load on the electrical system of a conventional RV.

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