I suppose i should say why so little battery usage. It is because lithium does not lose voltage as the charge decreases, it runs at 13-13.2 constantly instead of 10.8-12.4 with lead acid. Higher voltage means less amp draw for the same power, your power draw numbers are probably based on 12.0v.
I thought i would be too small with 50ah on mk 80lb, but I have never been lower than 80% remaining at the end of one day.. my typical use crappie fishing for 6-8 hours is around 93% remaining. On trips, i usually dont have to charge until the 4th or 5th day. I actually got a few comments last year about not charging my boat while others have extension cords everywhere. "Have you even charged your boat this week?" "Not yet, still at 65%" and their jaws drop.
I am so glad I bought ionics with Bluetooth for this reason.
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