Friday, Jan 04, 2019 at 22:52
JohnnyK,
Firstly, I read your opening post to be asking about "between trips" with no load on the second battery. My assumption may have been wrong.
If you are asking about a touring situation with a load on your battery and short drives, then things are quite different.
Les-PK
Ranger is, correctly, not making the assumption I made and is asking for confirmation.
I leave the battery in place for mains charging. When the engine is off the battery is isolated from everything else by the dc-dc charger. I have an Anderson going direct to the second battery. When I need to, I plug my mains charger into that. This also applies when I'm touring and need to top up.
If you choose not to use a dc-dc charger, just a solenoid-based isolator, it will do the same thing so you could charge from the mains the same way.
Now, if you're asking about touring with a fridge and other loads in use and doing short drives, then you would need something more than what I have said to supplement the charging from the short drives - solar or mains or generator.
Cheers
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