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Battery Voltage Critical Warning

Discussion in 'General Discussion' started by Kent, Jul 31, 2017.

  1. Kent

    Kent New Member Founding Member

    2
    1
    Jul 31, 2017
    Coeur D Alene
    2016 Cobalt 24SD
    It runs, it is a Volvo Penta, 300hp
    My Bike
    Hello Fellow Cobaltians,

    New to boating and new to my Cobalt but have a nagging issue that dealer seems to be having trouble with. When we start our boat at the slip we get the "battery voltage critical" warning message yet our boat fires up right away on just one battery. Had the boat in for its 20 hour service last week (new 2016 model purchased 5/17) and asked them to check on the warning message and they came back with it was a stored error code and batteries tested fine. Well back out today and still getting the same message. Volts on dash show 13.7 volts when cruising and when starting up. But when we park and hang out our music shuts off and all we hear is the warning chirp that accompanies the warning. Going back in tomorrow for more service but does anyone have any ideas on what the issue is? Thanks
     
  2. Tonka Boater

    Tonka Boater Site Owner Staff Member

    191
    101
    Jul 10, 2017
    Wayzata, MN
    1997 Cobalt 232
    502 MAG / Bravo I
    2016 Yukon Denali
    Thanks for posting the question, Kent. I'm not a battery expert so I'm hoping someone will jump in and help out.

    I assume the boat's still under warranty, have you tried contacting Cobalt? Maybe they can give you or your dealer some clues where to start looking. Could be a faulty circuit reporting a false code?
     
  3. 3pointstar

    3pointstar Active Member Founding Member

    39
    35
    Jul 25, 2017
    Granger, Indiana
    2000 -- 226
    7.4 MPI- 310hp
    GMC 2500 Durmax
    I'm not an expert by any stretch - I had erratic readings on my volt meter - and it turned out to be a bad connection. Cleaned all the terminals and never had issue again. However, you are in a little different position - Tonka gave the best advice - speak with your dealer since the boat is still under warranty - and don't take - can't figure it out as an answer.
     
    Tonka Boater likes this.
  4. Kent

    Kent New Member Founding Member

    2
    1
    Jul 31, 2017
    Coeur D Alene
    2016 Cobalt 24SD
    It runs, it is a Volvo Penta, 300hp
    My Bike
    Thanks for the feedback. Hoping dealer spends the time to figure it out; I get the feeling the first time all they did was check the battery voltages and since they were fine they said all was good. If they can't get it figured out today I guess a call to Cobalt will be my next step? Stay tuned...........
     
    Tonka Boater likes this.
  5. Tonka Boater

    Tonka Boater Site Owner Staff Member

    191
    101
    Jul 10, 2017
    Wayzata, MN
    1997 Cobalt 232
    502 MAG / Bravo I
    2016 Yukon Denali
    Good plan... keep us posted either way.
     
  6. Walt P

    Walt P Administrator Founding Member

    299
    135
    Jul 25, 2017
    Prarie Creek Marina
    2001 Cobalt 262
    Volvo 8.1L Gi 375 HP
    Your radio may be using one battery to stay programmed, even though you have the battery selector shut off. I had that issue until I realized the radio was draining the battery in between outings. One 3 week stretch drained battery #1, and #2 was fine. After we were running and selector was at "ALL" #1 charged back up.

    Also, a safety tip- if your battery has the ability to be topped off with distilled water or electrolyte, check regularly. I have another boat (Carver 3307) and had not checked fluid levels since I bought the boat. Went to crank the Port engine, and BOOOM! The battery had dried up due to in line charger, and the demand for power caused an explosion. So kids- check those levels. Boom Battery.jpg
     
  7. Tonka Boater

    Tonka Boater Site Owner Staff Member

    191
    101
    Jul 10, 2017
    Wayzata, MN
    1997 Cobalt 232
    502 MAG / Bravo I
    2016 Yukon Denali
    Yikes! I had the same thing happen on my 2008 Sea Ray. I smelled a bad sulfur smell one day and looked in the engine room and found battery acid all over. It was a nightmare to clean up because the battery wasn't in a battery box to contain the mess. I poured baking soda everywhere to neutralize the acid then wiped everything down. It took all day.

    I agree with Walt...check you batteries often!
     

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