Help needed 2015 ranger 520

[Jeremy z]

I have a power pole charge with two group 31 AGMs for my cranking and electronis a 36volt lithium for my trolling motor. I fished a derby the other day and at 130 or so the boat was slow starting. My partner and I look at each other like what the hell. Have never had issues with my set up. My live well pumps were squealing a little but didn’t think it would drain the battery’s. Read through the power pole app and saw low voltage obviously at the cranking battery. Got home and pulled the batteries out to load test and replaced the live well pumps with the same 800 GPH.
Batteries tested fine at two different locations. I reinstalled and went out to put a load on everything to see if it happened again. This time a lot more in tune with the volts and the power pole app. First thing I did was turn on the live wells. They came on but had now power to them. I then went and ran around running multiple diagnostics through the power pole app. It appeared to be sending 24 amps towards the cranking batteries which seamed weird. It would also show that battery to be at like 12.3 volts. Power pole guys said the charge is doing what it’s supposed to? They thought I again may have one or two bad batteries. In the meantime I took out and rebuilt my whole livewell system thinking it had to be plugged or blocked. It wasn’t 😡. I then went out again today. First thing I did was turn on the live wells and same thing no power. I thought I may have an air leak so I pulled the plug and flooded water over the pumps to rule out any leaks. The ran the same lack of power. I paid attention to my volts on smart craft and power pole app. It still shows a lot of amps going to the cranking side and the battery reading 12.3. I switched the bar in the app to just put power to cranking rather that both and the voltage in the batteries went up to 12.7 and the amps went to 10 or eleven. Which seam a little more normal. It still appears I have a draw somewhere and it’s also effecting my live well pumps. I’m at my wits end and have had a headache for a week from leaning in there upside down.
sorry for the long read just trying to explain my issues.
Any input is greatly appreciated

[Jbass123]

Electrical gremlins like this are tough to diagnose. Maybe try also posting in the electrical/trolling motor forum. Moderator over there is an expert at wiring issues.

[back_lash]

Electronics, what units and how many and any "boxes"? Would be my first question.

[Jeremy z]

I have 3 units 2 lowrance HDs 12 up front.
AT on one of them. 1 lowrance HDs 12 at the dash. During my power loss in the derby I was only utilizing 2 only for making and tide info. These don’t seem to be affected by my power issues. I was kind of hoping I had two separate problems but once I went through the live wells and the issue still remained.

[wmitch2]

Bad battery. Borrow a good battery from a friend and try it again. Where did you get it tested. Auto parts stores don't do a good test. Take it to a battery shop or Batteries Plus, or Sams, or to a Semi Truck dealer like Peterbilt or Kenworth, they can give you a print out of the true condition of a battery.

[back_lash]

Yeah sounds like AGM issue to me, might just be one of them. How old are they? Can you separate the AGM’s, outboard from the electronics?