batteries

  1. Reno Davis

    Main DC Breaker Panel - 2007 310 Sundancer

    I just recently purchased my first Sea Ray. It's a 2007 Sea Ray and I'm not fully understanding what to do with the Main DC Breaker Panel breakers and battery switches based on what the previous owner said they did with them. All I got was "I've never used it but I think you can swap between...
  2. Painkiller

    Battery voltage fluctuation

    I bought two new port side engine batteries three weeks ago as I was prepping the boat to get put in. I did not run hardly anything on these batteries before the boat went in. After it was dropped in the water, I went to start the port engine and it would barely turn over. That day I finally...
  3. skippy88

    Dead Battery Advice

    Hi guys, need some newbie advice! Sea Ray 320 2007 I stupidly left both my battery isolators + some light switches on overnight. I came over today and the 12V battery in the control panel shows dead. However I did leave shore power + AC converter (battery charger) on the same night. Should...
  4. Papabrer

    AGM & Wet Cell Batteries Together?

    Hi All, New owner of a Sea Ray 440 (1994). Upon inspection & survey I noted that I have AGM & Wet Cell batteries on board connected to the same electrical and charging systems. I don't know if this was done due to battery shortages (during the pandemic) or if this was a cost decision. I...
  5. B

    Dual Battery Question

    We have a SeaRay 240 Sundeck and it has the ability to have 2 batteries and a battery switch. Its time to replace batteries again, and I am always curious if it is better to have 2 starter batteries or 1 starter and 1 deep cycle. Most of the time, the radio and bilge pump are the only...
  6. R

    Battery

    Need to buy two batteries to hook up in parallel for my sea ray 40’ Motoryacht, going to get a marine battery at batteries and bulbs, will any marine rated battery work?
  7. J

    Where is the windlass battery located on '98 EB?

    New boat owner 1998 440 Express Bridge. Can anyone confirm for me where the battery for the windlass is located... and is it connected to the battery charger? Seem like the battery is dying (windlass is barely responding). Would appreciate any insight. joe
  8. Eddie B

    230ma draw draining batt 2

    Hi friends. I’ve been struggling with my batt 2 charge level. 2 new interstate batteries installed in April. Boat sat in water for two weeks or so and the charge on batt 2 went way dow to where it would not start the engine. I ran her for a while and she is back up to 11.5. Batt 1 is at 12.5. I...
  9. K

    1995 Sundancer 300DA

    95 300DA Sundancer with 3 batteries running bow to aft on the starboard side. Which battery is house battery? I assume: Rear bat = Port Middle bat = House Front bat = Starboard Can a few people give some feedback please. Thx.
  10. S

    Choosing The Right Batteries—HELP!

    Good afternoon fellow boaters! Just need some advice—so my 2005 Sundance 280 4.3L’s has this problem of either having one of the engines shut off a few mins after I start it up, or an engine not kick on at all (Yesterday went out on the lake, shut it off, and then had to drive back with one...
  11. businessjett

    2004 Sea Ray 260 house batteries

    Hello new to me. The 2 house batteries are start batteries not deep cycle. I read I need to measure the amp hours of every device. Eg. Fridge , cabin lights, cockpit lights, anchcor light, water pump. Vacuflush . i don’t even know how to do any of that. Has someone else already worked...
  12. M

    House Batteries

    Hi Everyone, My boat (SR 36DB) was in a harbor with no shore power a while and some of my batteries got depleted to less than 12v. Starting the engines was not a problem. So I thought that when I drive the boat going home, I expected the batteries to get recharged by the alternators...
  13. K

    Housekeeping battery issues: 1 overcharged.

    Newbie owner with a boat that needs work but was very cheap. It's an ongoing project that I'm clearly over my head with. One of the things we needed to do was to replace the batteries, which I did using NAPA deep cycle Marine 6 volts (X2) about a month ago. One of the replaced batteries...
  14. N

    3 Battery Bank - Inconsistent information - '04 280 Sundancer

    Hello everyone (newbie here - prior owner was original - I just purchased end of 2020), I have searched and searched without luck as I keep running into inconsistent information on my battery bank. I'll try to keep as short as I can. I have 3 batteries and two switches. Left switch is 1-both-2...
  15. RittSea

    Engine Hatch with Dead Batteries

    How do you open the engine hatch when batteries are dead?
  16. H

    Batteries

    Hi all, I just purchased my 260 Sundancer. The person I bought it from said do not leave the boat on Shore Power , he said the charging system will fry the batteries. My question is, If I leave the boat on shore power and turn off the battery switch could I still run the risk of frying the...
  17. Bonnie's AWOL

    Reverse Polarity light and Shore power not charging batteries

    I've had my boat three years, first two no issues with batteries, no issues with running shore power and having it run everything for days on end. (2011 Sundancer DA 260) Last summer, I went on a trip and after day three hooked up to shore power I realized none of my DC equipment was getting...
  18. Ed Gallo

    Changing batteries on 2007 Sea Ray Sundeck 240

    I am replacing the batteries on my 2007 Sea Ray Sundeck 240. Should 1 battery be a "starting" battery and the other be a "deep cycle"? Can both be "starting" batteries?
  19. C

    Batteries on a 2010 300 slx

    I have a 2010 300 SLX. I recently went to replace the 3 batteries. I assumed that I had 2 cranking (1 for each motor) and then 1 deep cycle for the house battery. Especially because the old batteries I had 2 Interstates that clearly said cranking on the top, and the 3rd was a West Marine that I...
  20. Tom Huntley

    Two batteries, $275; New Charger $400, maybe it's the isolator

    I'm almost at the point of Breaking Out Another Thousand. The two starboard batteries were dead and not taking a charge so I bought two new batteries: Cost $275. Then I read that I might have killed the batteries (I'll spare you the details) so I bought a new state-of-the art ProNautic 63140...
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