I’m thinking about adding a standalone electronics battery with its own independent charger. My setup includes 3 Solix, Mega 360, Mega Live and an Ultrex. Batteries include lithium starter/house and lithium trolling motor batteries charged via a charging system interconnected to all batteries. All electronics are connected to a fuse block I installed and that’s connected to a battery switch and grounded to the starter/house battery.
If I ground this standalone battery to my starting battery and then connect the + & - wires from the fuse block directly to the standalone battery is there any risk of interference feeding from the starter/house and/or trolling motor batteries to this standalone battery and then to the electronics?
I don’t currently have the choke cable, that came with the MegaLive, installed but might do that regardless since I get some interference from the trolling motor when using MegaLive on landscape mode.