Looking for additional Information on my battery health

[QueenBeeII]

Since you say this screen shot was underway, with the engine outputting 14.4 volts and your battery monitor seeing 12.91 volts, that says to me that when this screenshot was taken, the engine and house batteries were not connected (i.e. the ACR's were open).

Thanks Martin.
One more question please;
On a run to Friday Harbor after 4hrs of run time at between 2900-3000 rpm’s.
Per our Smart Shunt (IP65 500A/50mV)
Battery voltage dropped to
12.68V with the current showing:
-13.13 amps.
30 minutes later the battery showed:
12.77V and the current draw dropped to -5.41amps.
Is the improvement indicative of the ACR connecting ie. Closing?
My concern has been the negative number showing on the current amp readout while underway, if the Engine/House ACR is connected should the current amp move back to a positive number also?
When on shore power we always see the current amps as a positive and I expect to see that with the alternator doing it’s
Oh and thanks for the recommendations on using the Smart Battery Sense on the thrusters, that will be helpful.

 

[IslandCruisers]

Regarding alternator charge while underway, I’m seeing a negative current draw via the smart shunt, shouldn’t that be a positive number? When accounting for the basic electronics ie Garmin 7612 chartplotter, VHF, Volvo engine display, Fusion radio and primary refrigerator, rear fridge set to off. I had this looked at my a marine electrician who is upgrading our solar. We determined that the eng/ house ACR was not functioning properly so I replaced that and had the alternator tested by a highly recommended local shop, it was within factory specs. My battery voltage will drop some underway but seems to come back up to a degree.
At the end of the day I’m concerned about the negative current number while running.
Here is a screenshot of the app
Should I continue to be concerned or is this expected. If not any ideas on what to check next? Thanks for

 

[Submariner]

Thanks Martin.
One more question please;
On a run to Friday Harbor after 4hrs of run time at between 2900-3000 rpm’s.
Per our Smart Shunt (IP65 500A/50mV)
Battery voltage dropped to
12.68V with the current showing:
-13.13 amps.
30 minutes later the battery showed:
12.77V and the current draw dropped to -5.41amps.
Is the improvement indicative of the ACR connecting ie. Closing?
My concern has been the negative number showing on the current amp readout while underway, if the Engine/House ACR is connected should the current amp move back to a positive number also?
When on shore power we always see the current amps as a positive and I expect to see that with the alternator doing it’s
Oh and thanks for the recommendations on using the Smart Battery Sense on the thrusters, that will be helpful.

Your ACR doesn't appear to be working.
When the ACR closes, it'll do so when it sees a charge voltage. That'll be anything above 13 volts. With the voltage readings your reporting all being less than 13 volts indicates to me that you're not getting any engine charging.

Just because the engine is running doesn't mean I should see + current. It's possible for the boat to draw more power than the engine puts in. The better test is to look at the voltage of the Hosue bank. If it's less than 13 volts, it's not being charged.

Here's how the ACR's work:
The ACR sits in between the engine and house battery bank.

The ACR will close/combine under the following conditions:
Voltage reaches 13.6 volts for 30 seconds. -or-
Voltage reaches 13.0 volts for 2 minutes

The ACR will open under the following conditions:
Voltage reaches 12.35volts for 10 seconds -or-
Voltage reaches 12.75 volts for 30 seconds.

For a good overview of ACR operation, Start at timestamp 19:10. I go over, in depth, how the ACR's work.

ACR documentation.

https://d2pyqm2yd3fw2i.cloudfront.net/files/resources/instructions/990170140.pdf

 

[QueenBeeII]

Your ACR doesn't appear to be working.
When the ACR closes, it'll do so when it sees a charge voltage. That'll be anything above 13 volts. With the voltage readings your reporting all being less than 13 volts indicates to me that you're not getting any engine charging.

Just because the engine is running doesn't mean I should see + current. It's possible for the boat to draw more power than the engine puts in. The better test is to look at the voltage of the Hosue bank. If it's less than 13 volts, it's not being charged.

Here's how the ACR's work:
The ACR sits in between the engine and house battery bank.

The ACR will close/combine under the following conditions:
Voltage reaches 13.6 volts for 30 seconds. -or-
Voltage reaches 13.0 volts for 2 minutes

The ACR will open under the following conditions:
Voltage reaches 12.35volts for 10 seconds -or-
Voltage reaches 12.75 volts for 30 seconds.

For a good overview of ACR operation, Start at timestamp 19:10. I go over, in depth, how the ACR's work.

ACR documentation.

https://d2pyqm2yd3fw2i.cloudfront.net/files/resources/instructions/990170140.pdf

Thanks again, we appreciate your input.
We had the ACR’s replaced prior to the Friday Harbor run. Will have the electrician ensure they are wired correctly and troubleshoot.
Found the following doc at Blue Seas website for anyone else experiencing charging challenges.