shore power/battery switch question

matt4704

New Member
Jun 18, 2010
103
St. Petersburg, FL
Boat Info
Sundancer 270
Engines
7.4 Mercruiser w/Bravo III Drive
When I am connected to shore power Where does my battery switch need to be. Do I leave off, all, 1, or 2....Also when connected to shore power is it supposed to be charging my batteries? :huh:
 
I believe you want the battery switch to be on "both" and the "convertor" switch on the control panel in the on position. Then both chargers will be lit if you check them visually.
 
Hi,
I don't know how the 270 is wired but on the 340, the charger is wired directly to the batteries (4), and whenever your shore power is on, with the A/C converter breaker on, the batteries charge. Hope this helps.
 
shore power will charge batteries regardless of what position the switch is in. i usually turn the switch to off when leaving the boat in case the shore power goes out.
 
I just got this boat and am learning as I go. I plugged into shore and went into the engine compartment to check by battery charger..No lights on and it read 5...Other than dead batteries, how do I determine if it's working or not?
 
to check: plug boat to shore outlet (make shure there is power in outlet), if you have selector switch for shore/generator - switch to shore, turn on battery charger (could be marked converter) on 120V panel.
wait 2-3 mins and check if there is any lights on charger (some older pro mariner battery chargers have no lights, just voltmeter). if there is signs that bat. charger is working use voltmeter or better load tester and check if it actually charging batteries. if there is no output from charger - check fuses on output lines, if they are ok -likely battery charger is faulty
 
While connected to shore power, should EVERY switch on the circuit panel be in the OFF positions to assure proper battery charring is taking place on the 2013 Searay 240 Sundancer?

Or should I have the "shore power" and "battery charging" switched to the ON position?
 
While connected to shore power, should EVERY switch on the circuit panel be in the OFF positions to assure proper battery charring is taking place on the 2013 Searay 240 Sundancer?

Or should I have the "shore power" and "battery charging" switched to the ON position?

This is a wicked old thread....but it's worth a shot :)

Generally you do need shore power breakers "on" as well as your charger/converter "on" to get the batteries charging. You should be able to tell when the charger is running by looking at your voltage. It should jump over 13 when the charger kicks in.
 
Pirate Lady, did you mean to say ON always? Not No?
 
Pirate Lady, did you mean to say ON always? Not No?

There's really no such thing as "always" or "never" in used boats. Prior owners could have changed things over the years. But typically, most of the time, generally...both the shore power breakers and your charger/converter breaker will need to be in the on position to get a charge on your batteries. But you really should verify this directly. Your boat should have a volt meter on your main AC/DC panel, correct?
 
I only use boat once very moth or two and just want to be sure the batteries are getting a charge when it is stored and plugged into a 15 amp , 120v. circuit at the storage yard.
 
There's really no such thing as "always" or "never" in used boats. Prior owners could have changed things over the years. But typically, most of the time, generally...both the shore power breakers and your charger/converter breaker will need to be in the on position to get a charge on your batteries. But you really should verify this directly. Your boat should have a volt meter on your main AC/DC panel, correct?

YES. Thats what I meant to say. All my SRs came this way from factory.
 
I only use boat once very moth or two and just want to be sure the batteries are getting a charge when it is stored and plugged into a 15 amp , 120v. circuit at the storage yard.
Visually check your battery charger that the appropriate lights are lit up. Put a volt meter (you can get them for $10) DIRECTLY on the battery before you turn the charger on and immediately after - you should see the voltage jump up significantly.
 
This is a wicked old thread....but it's worth a shot :)

Generally you do need shore power breakers "on" as well as your charger/converter "on" to get the batteries charging. You should be able to tell when the charger is running by looking at your voltage. It should jump over 13 when the charger kicks in.
 
Thank you all. I checked the voltage at each battery and , for my 240 Sundance, the shore power and battery charger circuit on the panel must be in the on position for both batteries to be cha
to check: plug boat to shore outlet (make shure there is power in outlet), if you have selector switch for shore/generator - switch to shore, turn on battery charger (could be marked converter) on 120V panel.
wait 2-3 mins and check if there is any lights on charger (some older pro mariner battery chargers have no lights, just voltmeter). if there is signs that bat. charger is working use voltmeter or better load tester and check if it actually charging batteries. if there is no output from charger - check fuses on output lines, if they are ok -likely battery charger is faulty
 
Thank you all. I checked the voltage at each battery and , for my 240 Sundance, the shore power and battery charger circuit on the panel must be in the on position for both batteries to be cha
Did you anticipate the batteries charging if the power and charger were NOT on? :)
 

Forum statistics

Threads
112,948
Messages
1,422,805
Members
60,930
Latest member
Ebrown69
Back
Top