Have you contacted Ionic or yiur seller about your battery? Reason I ask is one of their selling points is there is supposed to be no voltage drop-off as they go down in capacity. Theoretically they should ve the same at 1% as they are at 100%.

They start losing volts as soon as anything turns on. Every battery ever made does.

The difference in the clarity of any graph changes during the day. Water clarity changes with microorganisms as they react to light. As the daylight changes, so does the need to adjust the graph for the best returns.

Modern electronics have such a tightly regulated power supply, that even if you send them 16v, the unit is only allowing 12 (or so) volts into the circuits. The other 4 volts is there to empty your wallet and make you feel better. Pure snake oil.

That’s impossible. There will always be a voltage drop…that is how the % of charge is calculated. 99% is always lower voltage than 100%. It’s simple physics.

Correct, I have non bluetooth lithium batteries for my trolling motor. The only way to calculate % is by voltage.

I'm obviously not a physicist.

Nah. But you do save lives…so that’s pretty bad [censored] in its own. ^^^

I'm just one part of a team that helps people. I don't do any of it on my own. I appreciate the thoughts though.


On the battery deal I guess I was thinking of the lithium trolling batteries where they don't slow down they just die when they hit zero unlike wet cell/AGM.

For those of you who are wondering about voltage drop on lithiums here you go. If you have less at your graph it’s your wiring. As far as image clarity, again it’s wiring or need to adjust gain like Steeze said. Water clarity changes throughout the day and even in different parts of the lake.

And when I said 12.9 volts, that’s at the graph. Not the battery.

Awesome. Thanks

Have you tried starting your engine to get your screen back running better?
If your graph is showing more than a tenth you could probably improve your situation with bigger wire from the battery to the graph.

Goodness, this thread is all over the place. Is it Spring yet?

Man. It ain’t even winter yet.

They all do it Mark. I have checked the volts at the battery and it reads the exact same as it does at the Garmin- just on hour 8 or so on a 125 IONIC (depending on the load of course) you will see your volts start to drop and change the picture. I have spoken to a friend of mine who is literally a Garmin engineer and makes this stuff. Ive seen this on 3 boats, all new, all top notch wiring etc. But in the winter when it gets good I will go out at day break and stay on the graph until sundown. Not much running around. So Im not putting a lithium battery for electronics through what most people are. All my problems solved with a 100AH dedicated 16 volt battery- it's a BEAST. It has nothing to do with the water clarity magically changing in a matter of hours... it has to do with the battery but not many are going to experience it because most are not spending a 10-12 hour day on the water when it's 35 degrees outside.

I use one of those batteries to run my garmin and scope at the bow. I would say that chart is 100 percent accurate.