Battery switch

[Sea Señor]

Hi all, I have a 2010 sundancer. Does anyone know which is the house battery and which is the engine/start battery? My switch has 1, both, 2 and off. When I’m anchored I switch it to the one position and every couple hours I start the boat and let it run for 10 mins to charge the battery. But last week I decided to use the two position. After 2 hours I went to start it and it clicked a few times before finally turning over. There was also low voltage warning indicator that was displayed. I left it running for about 15 mins and moved the switch to both. I shut it off then restarted it and the code cleared. The manual doesn’t say much about the battery switch and how to use it. I always turn the switch to off when leaving even though it’s connected to shore power.

 

[bobeast]

Why not turn on your cabin lights and see which switch position turns them off?

 

[Bt Doctur]

Most chargers are hooked directly to the batteries so the switch position does not matter.
Only you can determine how the batteries are hooked up and even IF you have a house system.
If you used position 1 and it worked ok for that day and then used number 2 position and it didnt, that could mean #2 might be bad.
And NEVER be on both/all except for emergency starting

 

[Sea Señor]

Most chargers are hooked directly to the batteries so the switch position does not matter.
Only you can determine how the batteries are hooked up and even IF you have a house system.
If you used position 1 and it worked ok for that day and then used number 2 position and it didnt, that could mean #2 might be bad.
And NEVER be on both/all except for emergency starting

Yup. Got it. Thanks

 

[Sea Señor]

Why not turn on your cabin lights and see which switch position turns them off?

I’ll try that. Thanks

 

[Wylie_Tunes]

Once you figure out which is the main and whish is the house, Id suggest a good deep-cycle or two that can supply the needed anchor time. I hate to see people idle and engine while at anchor. Huge Co danger.

 

[bobeast]

I’ll try that. Thanks

When you do so, be sure and unplug shore power to simulate being at anchor.

 

[Sea Señor]

When you do so, be sure and unplug shore power to simulate being at anchor.

Yes thanks again

 

[Sea Señor]

Once you figure out which is the main and whish is the house, Id suggest a good deep-cycle or two that can supply the needed anchor time. I hate to see people idle and engine while at anchor. Huge Co danger.

Understood. I usually run the engine every couple hrs for 5 mins to do a quick charge