Paralleling batteries 1 & 3 for Winter Storage

Hi Tugnut Neighbors.
I lifted image from my Owners Manual to amend for my question.
Our new 2015 R27 is in winter storage in unheated building.
I'm okay with connecting new NOCO Genius 2 trickle charger to house bank (2 + 2).
Am I okay to parallel (1 + 3) and connect to NG2 to trickle charge?
Both battery banks would be disconnected from *house, *thrusters and *engine.
Thanks for any suggestions.

If you have 120v to run the trickle charger, why not use a standard adapter for your shore power input, and plug your whole boat in?

SKing said:

If you have 120v to run the trickle charger, why not use a standard adapter for your shore power input, and plug your whole boat in?

Click to expand...

Perfect idea. I have the adaptor, but lacked enough systems knowledge to go confidently forth. Thanks for the response and idea.

Happens to me all the time