I do what
@Rocketman suggested, & disable the Victron charger with the software APP. It is a good practice to do this before disconnecting the Battery from the Solar Charger;
Disable Victron MPPT via software
Then disconnect panels ( no load )
Then disconnect Victron MPPT from Battery
Hooking back up ,,, just reverse order ( as the charger should already be disabled - but once the battery is connected the charger is “viewable” & you should verify it is disabled before connecting the Solar Panels;
This is what “Enabled” looks like ,,, to “Disable” the position of that onscreen slider switch is on the “left”
View attachment 208346
Go here “
Settings” & click on “
Battery”;
View attachment 208347
Then you can “
Disable”;
View attachment 208348
********
I wonder if you used a Blue Sea 9001e ( 4 way ) in this manner
?;
#1 Battery
#2 Solar Charger
Load to Lynx
350 Amps continuous rating for inboard gasoline or diesel engines.
www.bluesea.com
View attachment 208345
Years Ago, I discovered these 4 way switches ( @ the time ), were only $5 CAD more than the On/Off Blue Sea Switches ,,, Even if I am only using 1 input I always buy the 4 way switches. The Caveat is I design my 12vdc stuff & know how it operates, so I won’t / shouldn’t screw it up ,,, but there is always hope
.
I even used it on my Portable Solar Charger;
Thread 'Portable Solar Charger'
https://diysolarforum.com/threads/portable-solar-charger.79393/