Battery isolator

Kayteg1 wrote:
The insulators have several disadvantages.

The OP is talking about isolators, not insulators.

Grit dog wrote:
Depends what you're isolating.
....~snip~...I've had good service out of the blue seas ACR I put in the boat.
Never touch it. It opens when it senses charging voltage and closes when it gets below 12 or something safe to unhook the other battery before it is discharged.
No fuss, don't need to do anything it latches and opens as needed.

Isn't there another well known brand using this same technology but more oriented towards RV situations?

I considered whatever brand that was, but opted for the continuous-duty solenoid. Granted those were a little more expensive and the hassle-free operation is convenient, but did I read of more than few that have a tendency for long term failure? The tried-and-true CD solenoids seemed more reliable which made up my mind.

What's the consensus on better reliability of these types of power-sensing idolators?

I had the combiner on my motorhome conversion and bought it over 10 years ago.
Its solenoid failed after 1 season, when electronic board was still good.
Having bunch of automotive relays, I was planning to parallel 5 of them to do the job, but then in motorhome all batteries were in 1 compartment, so simple disconnect switch was doing the job just fine.
In motorhome I was using alternator to power AC, so you could see continuous 50 amp +

I am also unclear what OP is wanting to do. So assumed isolating camper from truck (when not running) so as not to drain truck, but that's not what I read?

You wouldn't want to isolate the 2 truck starting batteries from each other. Because of older thread where OPs truck batteries died over winter storage, thinking that might be whats being asked?

Dual batteries in camper, while holding one in reserve seems a good idea, longer run times, battery life and performance is better using both.

Separating- I also use constant duty solenoid on auxiliary charge line isolating camper from truck. Simple inexpensive solution in line on trucks that don't disconnect charge line. Mines a little over 9 1/2 years old.

Bottom line, dual batteries of a bank should be cycled as one, that's how they are wired- to see same load and charge.