Help, possible electirical issue

R

rmilian340

New Member
Oct 17, 2006
39
Ft Lauderdale, Fl
Boat Info
340 Sundancer 2005
Engines
twin 8.1 Horizons
Greetings,

I have a 2005 340DA. Recently my starboard batteries die if I am on the hook not running the generator. I replaced the batteries because they where over two years old. However, I am still having the same problem. The only thing that I have running on battery is one refrig. Any ideas as to what could be draining the starboard batteries. Where should I start?

All the best,
 
Turn the fridge to a lower setting.
 
Your fridge should not drain well operational batteries. I run my fridge all the time. I'm sure we have very similar setup. There could be many different things running without you realizing (e.g. stuck switch on shower sump pump making the pump run all the time). I would review manual or contact SR or your local dealer to find out what your starboard batteries supply power to. Having this information you'll be able to start marking primary candadates that can contribute to drain the batteries.

Good luck,
Alex.
 
That is not normal, unless you are "on the hook" for days! I suggest you check for a draw on those batteries. By using a meter and pulling one fuse at a time you will eliminate each circuit. You should be able to identify what the cause of the drain on batteries is.
Good luck
 
Have the battery tested "interstate brand had a bad run"
also have draw test/load done to see what is useing the power and how much ?double check all connections pos. & neg.turn-off brakers to unused items.
a lose connection draw higher amps
 
While out do you run the stereo? (cranked an amp/sub will draw down batteries) - I have seen boats drain a lot of power in 2-3 hours at the beach with the stereo, fridge(s), Nav equipment (GPS, plotter) still running. Some have added additional batteries to their banks to increase their usable time. If you can isolate the starboard bank (which I believe is the main "house" load) shut it off (solenoid or switch) and see what is on and what is off. Loose connections (as someone stated above) - including ground wires on a bus can cause increased draw.
 
Lots of strong statements in this thread. Wish the title was "Electrical problem 2005 340." Unless you have re-wired your boat, the starboard bank powers NONE OF THE ABOVE. It powers the starboard engine and the electronics that normally operate when the engines are running. Do you leave something at the helm on while on the hook? Even if you did, I can't imagine it draining the starboard bank that fast. My guess, my friend, is that you have a short. Use the method above to isolate it - either that, or you have a problem with the charging of that side.
 
Last edited:
Greetings,

I installed brand new deep cycle batteries. If it is a short, it should blow a fuse. The batteries will charge up again as soon as I have the engine running. It seems to charge while on shore power as well.

The dealer is no help. They want me to bring the boat in.
 
How long are you on the hook till your batteries die?
My Norcold Recommends setting #3. Actually a warning. Any higher setting will kill batteries fast. Per Manual. Setting # 5 is for frozen food.
I could not find the Amps my refer pulls.
Knowing what DC Amps the refer pulls. And know what your battery Amp Hrs are. You would know about how many hrs till your batteries are drained being on the hook.
I would kill a set of G24 in 12 hrs with the refer, bait pump,anchor light, and anchor alarm on.
Upgraded to G27 batteries and turn the refer off a night now. If your killing your starting batteries on the hook. Somethings not right. Like the other members said. With everything turned off. Check that there's no abnormal amount of juice being pulled out of the batteries.
 
Last edited:
You must log in or register to reply here.

Forum statistics

Threads
113,241
Messages
1,429,123
Members
61,123
Latest member
Tim Duncan
Back
Top