The more I use the poles the more dramatic the flickering gets. Yes, the batter is becoming drained, but it shouldn't be this bad. The battery is a new Northstar 31, maybe the best AGM battery made. Also, the front unit shut off when I started the engine after 2.5 hours of fishing. Where should I start looking for the problem? The front unit's power source (in the bow) should not be impacted by the power-pole connection at the battery. Thanks in advance for any help.