Front graph/power rigging/battery questions

[badbub19]

So, currently awaiting delivery of a Helix 10g4 and mega 360... I already have a dedicated wire ran to the front for electronics, but it is connected to my main starting battery (aluminum boat/115hp). I currently run Ionic lithium 100ah. I haven't had any issues to date running a standard DI graph up front, but worry that adding the 360 and possibly a mega live 'ducer down the road may create problems. So my question would be... would the IONIC 12v 20ah battery be sufficient as a stand alone electronics battery to that front setup of one graph/360/Live? Go bigger for stand alone? Or do you think I'm better off just leaving it on the house/cranking battery?

[CatFan]

I wouldn’t go with 20AH. The Helix alone at 2.6A will run that battery down in less than 8 hours.

[badbub19]

Good point.

[DQM]

After a normal day with your current setup what is the % charge on your Ionic app say you are at?

[badbub19]

Usually close to full unless I'm on an electric only lake and not running the outboard.... but thats only running 2 lowrance Hook2 units. Another concern was interference from everything else hooked up to the same battery

[DQM]

Doesn't cost you anything except some time to hook it all up to the starting battery at test it. And with the Ionic app, you will know exactly how many amps you are pulling.

You have a lot of AH there that is not being used. Let's say using bigger then probably real numbers the Helix run at 3amps, 1amps for the 360, call your current setup if you are adding to it another 4 amps with pumps, etc. Total is 8amps You could run it all off of your 100ah for 10 hours and still have 20% left, which will be more than enough to start the engine if you ever do run it down that low.

[haus9393]

Everything should be fine to hook up to the 100ah ionic.

[badbub19]

Thanks all! Much appreciated! Direct to starting battery it is!