Dead Batteries-Hatch wont open

Discussion in 'Electrical Stuff' started by Richard Johnston, Sep 10, 2019 at 6:09 PM.

  1. Richard Johnston

    Richard Johnston New Member

    2
    Tuesday
    2018 Sundancer 280 Raymarine GPS
    single screw 350 Mercruiser with bravo III Drives
    I have a 2018 280 Sundancer. The last person that put the boat away about 1 month ago left the battery switch in the "Both" position. Today I went to get the boat and the batteries were dead. The hatch would not open. I tried to access the hatch opening to pull the pin from the hydraulic actuator, but it appears to be under stress and wont come undone. I pluged in the shore power and turned on the battery chargers, but after 3 hours, the juice was not sufficient to raise the hatch. Suggestions??? Also once I have access to the engine bay, I want to put in some sort of shortcut to the hatch actuator so that I can access it with out having go through all of this BS. Suggestions??????????? Thanks for your help in advance.
     
  2. Zim

    Zim Active Member

    178
    Jan 16, 2018
    2012 Sea ray sundancer 310
    Twin merc
    I'd check the hatch fuse/ circuit breaker to make sure it didn't trip. Happened to me and i spent hours.
    But otherwise, you may need to leave batteries on charge all night.
    As for access, i would put a 12v cig lighter adapter where your kill switches are, wire it right to the lift cylinder. This way, regardless of your batteries, you'll be able to supply 12v independ of main system to ensure you'll always be able to open the hatch. Just a thought.
     
    stephens013 likes this.
  3. stephens013

    stephens013 Active Member

    245
    Oct 8, 2009
    Ft Walton Beach, Fl
    2001 510 Sundancer
    1997 400DA Sundancer
    3196 Cat; 660 PHP
    3116 Cat; 340 PHP
    What's the current medical condition of the dude that screwed the pooch on this deal
     
    Kwik and techmitch like this.
  4. techmitch

    techmitch Well-Known Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Cracked me up man. … But F-yea, and why didn't he/they rectify the situation? Even if it meant/means new batteries!
     
  5. Richard Johnston

    Richard Johnston New Member

    2
    Tuesday
    2018 Sundancer 280 Raymarine GPS
    single screw 350 Mercruiser with bravo III Drives
    My friend that left the switch in the “Both” position is more mentally depressed than physically.
    To follow up, after 8 hours on shore power, I was able yo open the hatch & put a “real” charger on the batteries. 1hour later the engine fired right up.
    I like the suggestion about putting the 12 V cigarette lighter adapter in. I will do that tomorrow. Thanks for everyone’s input!!!
     
  6. techmitch

    techmitch Well-Known Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Sorry to bust on your buddy. I think Stephen and I were both thinking it was a yard guy/marina that left the battery switch on.
     
  7. boatman37

    boatman37 Well-Known Member

    Jun 6, 2015
    pittsburgh
    2006 Crownline 250CR. 5.7 Merc BIII
    Previous: 1986 Sea Ray 250 Sundancer. 260 Merc Alpha 1 Gen 1
    5.7 Merc BIII
    I have one of these in my boat. When I pull the batteries for winter I set a battery on the floor and hook jumper cables to these posts to raise/lower the hatch. Can also use them to jump it. Not sure if this is a Crownline thing or if you can buy these off the shelf for any brand?

    [​IMG]
     
    tdschafer likes this.
  8. stephens013

    stephens013 Active Member

    245
    Oct 8, 2009
    Ft Walton Beach, Fl
    2001 510 Sundancer
    1997 400DA Sundancer
    3196 Cat; 660 PHP
    3116 Cat; 340 PHP
    That's cool. Don't think I've seen that rig before. Great idea
     
  9. paulswagelock

    paulswagelock Well-Known Member

    Oct 25, 2010
    pa
    2018 SDX 270 OB 300 Verado
    Verado 300
    Many manufacturers use that set up, it is a good design.
     
  10. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Did you happen to try plugging a battery into the 12V outlet near your dash? For many of the Sea Rays, they are wired such that it will power the hatch motor. Often, in the owner's packet, there is a jumper cable. I can't say for 100% with your boat - but that is, generally, the case.
     
    Last edited: Sep 11, 2019 at 8:42 PM
    amajamar likes this.
  11. insfnds

    insfnds Member GOLD Sponsor

    102
    Jul 8, 2008
    Canyon Lake, TX
    2011 390 Sundancer
    Twin 496 Mag Axius
    I don't know if you can do this on your boat but I can on my current boat and my previous '01 310DA. Your boat is very new so YMMV.

    Open the access hatch below the helm and attach a new battery, jump box, or >=20amp charger directly to the power buss. This will supply power directly to the helm which will allow you to open the hatch. If the batteries are as dead as they appear to be, then you should probably do this with the battery switches off.
     
  12. Golfman25

    Golfman25 Well-Known Member

    596
    Sep 12, 2009
    IL
    281
    V8
    They should make it rather easy to open a power hatch with a dead battery. Happens all the time. With the jump packs available these days, you should be able just to plug in and go.
     
  13. amajamar

    amajamar Member

    137
    Sep 9, 2013
    Wareham, MA
    2001 380 Sundancer
    8.1S Horizons
    Indeed. If you have a battery jump box and a male/male cigarette lighter adapter cord, you should be good to go. Works on the 2001 and 2002 310 and 380.
     
  14. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    Use the setup in post 7 or an equivalent connected directly to the battery that power the lift motor or directly to the lift motor
     

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