I’m considering getting a lithium battery dedicated to running only the graphs on my boat, but not sure exactly how to calculate nor where to find the info to do so even though I’ve looked and was thinking some of you guys could help me out? I’m running a Humminbird Onix 10, Solix G2 10 and a Lowrance Elite Ti2 9. I believe the amp draw would be 6 amps. I don’t tournament fish, I just want them off my starting battery and was wondering what size battery I would want to run the graphs for 8 hours. I’d leave pumps on the starting battery.
I’m thinking maybe a 60aH battery, taking the 6amp draw x’s the 8 hours with a little left over, but that’s a pure guess
Thanks for any help!!!