If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Registered Biggus's Avatar
    My Boats:
    02 Cigarette Mystique T/S
    Join Date
    Apr 2001
    Naples, Maine

    On board batt charger ?????

    I have a battery charger in the engine compartment of my Top Gun. I have never used it until today. How many amps does this unit put out? And is it common to leave the batt charger on while connected to shore power with the boat unattended?

    I went out to the boat tonight and turned the charger on. Is it safe to leave it on overnight????


  2. #2
    Charter Member #232 Charter Member Audiofn's Avatar
    My Boats:
    1979 Formula 302, 99 Formula 353, 81 Donzi 18 2+3 with 454
    Join Date
    Oct 2000
    Carlisle, MA USA
    The amps of output should be written on the unit. They ussually are not more then 20 amps and will regulate themselves down to a trickle. You should be ok with just leaving it on and certainly over night. I do not like the idea of them being plugged in for long periods of time as it can cause corrosion in the boat. I think they call it Galvanic corrosion but I am not sure. Anyhow to be safe I would unplug it in the am and only plug it in when you think it needs it.

    Put your best foot forward!

  3. #3
    Registered Flyinbrian's Avatar
    My Boats:
    24 Skater
    Join Date
    Dec 2001
    Fort Myers, Florida
    The Dual Pro Charger monitors the battery/s and will charge at a max of 15 amps. It will return to trickle when needed. It also shuts off completely until the voltage drops enough to return to trickle. These chargers are the only ones I have seen that are really designed for long term storage and built to be plugged in all the time. It has a built in microprocessor monitoring the battey/s.

    Here's a link with more info~

  4. #4
    Registered MitchStellin's Avatar
    My Boats:
    Zodiac RIB
    Join Date
    Nov 2000
    Grand Haven, MI USA
    You have to have the shore power on or it won't work. Also you may need to have the switch on the panel "on" for the system to work. I have seen boats burn from these and frigs left on keep an eye on it for the first couple of times.

  5. #5
    Registered Havasu Cig's Avatar
    My Boats:
    2004 28 Skater / 300x's
    Join Date
    Jun 2002
    San Diego
    Originally posted by MitchStellin
    You have to have the shore power on or it won't work. Also you may need to have the switch on the panel "on" for the system to work. I have seen boats burn from these and frigs left on keep an eye on it for the first couple of times.
    There is actually a "battery charger" switch on the panel inside the cabin on the Top Gun. Just attach the shore power and turn on the switch.

    I was wondering about using this as a battery tender while in storage. I used to hook up tenders on my other boat, but it would be alot easier to just plug in the shore power. Does anybody no for certain that it won't cook the batteries?

  6. #6
    "Float chargers" as apposed to "trickle" chargers automatically detect battery levels and add charge when needed. These are the types to use for long periods of storage. They won't boil or over-charge batteries like a trickle charger might

  7. #7
    Registered bajadude's Avatar
    My Boats:
    340 Sundancer with 8.1s, formerly 1999 33 Outlaw HP500s
    Join Date
    Apr 2002
    Boca Raton, FL
    I leave mine on all the time (along with the refrigerator) and haven't had any problems.

  8. #8
    Over the years I've "cooked " alot more batteries than I've saved. If you can turn the main switches off an truly isolate them you'll be much better off. The new "wet matt" batteries really hate trickle charging, and don't need it anyway, without a drain they seem to hold forever.


  9. #9
    Platinum Member Platinum Member mcollinstn's Avatar
    My Boats:
    1991 F311SR1
    Join Date
    Sep 2001
    Ferroresonant chargers will cook the batteries if left on all the time. Period.

    Three-stage full-electronic chargers "can" be left on indefinitely. Some still do a better job than others.

    By experience, I know that Pro-Mariner "FLYBACK" chargers will maintain batteries with no electrolyte loss over a few months as long as the battery temperatures are between 60 and 80 degrees.

    In my cruiser, after trying a FLYBACK ProMariner and still having electrolyte loss, I went to a Newmar 3 stage electronic with battery temperature sensing probes and have never had to add electrolyte in three years THREE YEARS and the charger stays on ALL THE TIME in my cruiser. The main difference here is that the engine room temps on the diesel cruiser run as high as 120 when at fast cruise and go as high as 135 for a few hours after shutdown. It was at these elevated temperatures that the float voltage on the flyback unit was overcooking the batts. I ended up putting the flyback on the Formula where it has proven to work nicely.
    I see London, I see France...

  10. #10
    Registered velocitoy's Avatar
    My Boats:
    a small fleet
    Join Date
    Aug 2002
    east coast/new england
    HEY BIGGUS...I tried to P.M. you but your box is full...I saw on KN's thread that you had a twin turbo in your SUPERBOAT...Just cuz I'm nozee...Did you buy from/sell that boat to a guy named BARRY??? Was it a blue & white boat with USA1 on the side??? I knew a guy on LAKE WINNIPESAUKEE with the same set-up & that's NOT a common combo!!! I rode in BARRY's boat many times & it was deceptively fast & was a handful if you didn't know what you were doing!!! Unfortunately BARRY is now dead but his boat is now for sale by someone in N.H...BTW...It's in VERY good shape for it's age & if I remember correctly the price$$$$ was right!!!(As a matter of fact it was advertised here on OSO for $23,500 by a guy named SCOTT WALLACE in DANVILLE N.H....It may even still be listed under the SUPERBOAT header...) BIGGUS...Let me know if I got the history right!!! THANX>>>>>>

Page 1 of 2 12 LastLast

Similar Threads

  1. Which on board battery charger?
    By Michael Garibay in forum General Q & A
    Replies: 6
    Last Post: 01-18-2010, 10:28 PM
  2. Questions about Batt. Charger & Hatch Accuator
    By rrentsch in forum Powerquest
    Replies: 16
    Last Post: 05-22-2007, 07:34 AM
  3. Guest on-board batt chargers..
    By Shorgasm in forum General Q & A
    Replies: 7
    Last Post: 05-20-2006, 07:45 PM
  4. On board battery charger
    By corbvette in forum General Q & A
    Replies: 8
    Last Post: 04-16-2006, 08:38 AM
  5. Need help selecting an on-board battery charger
    By 1stfntn in forum General Q & A
    Replies: 5
    Last Post: 04-04-2004, 05:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
All times are GMT -5. The time now is 08:52 AM.
Powered by vBulletin® Version 4.2.0
Copyright © 2016 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.