Please help me with batteries... - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Out There > Cruising & Liveaboard Forum > Living Aboard
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 06-27-2006
Member
 
Join Date: Mar 2006
Location: Charleston SC
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
toastchee is on a distinguished road
Please help me with batteries...

Marine batteries, that is.

I'm trying to understand how to get power on my boat. I'd like to get a marine battery that can power some fans and my running lights. The more amps the better.

I sorta don't understand how I would recharge one at the dock or in my car. Ideally it would charge in the car with some sort of hookup during a long trip. IF I could trickle charge it during the week, that would be cool too. How do RVs do it?
Reply With Quote Share with Facebook
  #2  
Old 06-27-2006
sailortjk1's Avatar
Senior Member
 
Join Date: Dec 2005
Location: Porter, IN
Posts: 4,647
Thanks: 1
Thanked 1 Time in 1 Post
Rep Power: 10
sailortjk1 has a spectacular aura about sailortjk1 has a spectacular aura about
A little more info might be helpful?
It sounds like you have a smaller boat with either no motor or perhaps an outboard motor. If your only runing fans and running lights, I would think a deep cycle group 27 of around 80-90amp. would be plenty. That should give you many hours for your usage. As far as recharging, it doesn't sond like you have an alternator on your motor or an aux. charger wired into your boat. I would simply find myself a charger from the marina, they come with aligator clamps, clamp on, plug it in and charge your battery once a week or so. Your not drawing a whole lot with fans, you should be just fine.
Reply With Quote Share with Facebook
  #3  
Old 06-27-2006
Junior Member
 
Join Date: Jan 2004
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
davidbrooke2003 is on a distinguished road
Charging batts

I would get a solar panel. Rather than spend money on a charger that is only good at a dock you could buy a solar panel that will give you power anywhere. If you get a small panel you will not need a regulator.
Reply With Quote Share with Facebook
  #4  
Old 06-27-2006
hellosailor's Avatar
Plausible Deniability
 
Join Date: Apr 2006
Posts: 10,417
Thanks: 1
Thanked 74 Times in 72 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
Toastchee, you might want to do a little work online looking at marine or RV batteries and charging systems, or pick up a classic little book called "The 12v Doctor" or "The 12v Bible" from many boating stores.

Any battery that is small enough for you to conveniently lift and carry from your boat to your car, won't have a lot of power. "Lot" being a relative thing, maybe it wil be enough for you. And a battery in a car is literally a bomb, if it isn't bolted down and you are in an accident, it becomes a 40-pound missile filled with caustic acid. You car's charging system is also not designed to recharge it, unless you start modifying you'll just ruin it, and your car battery.

So...if you start over, by figuring out how much power you need and for how long, then you can start designing a whole system. Or, just buy a deep cycle/trolling battery at WalMart along with a charger for it, and see if that works for you.
Reply With Quote Share with Facebook
  #5  
Old 06-27-2006
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I think the solar panel charger is a good one. It should top off your batteries while the boat is just sitting at the dock. If the panel is small enough, then you can just wire it directly to the battery, and won't need a charge controller.

However, you're really much better off sizing the battery according to the loads you're going to put on the battery.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #6  
Old 06-27-2006
sailandoar's Avatar
Senior Member
 
Join Date: Mar 2006
Location: Cape Fear, NC, USA
Posts: 208
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
sailandoar is on a distinguished road
Add a battery to your car...

Mount an extra battrery in your car or truck... perhaps in the trunk, and then just take it out and use it when needed. A switch is needed to be sure you don't short out the leads when the extra battery is disconnected.

A '24' series is a nice size to carry and will run lights etc for a weekend camping/sail if your frugal. The '27' series battery is portable but you can get a strain or a hernia pretty quickly with one. Two '24' series deep cycle would be more juice and easier to move around than a '27' series.
Reply With Quote Share with Facebook
  #7  
Old 07-12-2006
Senior Member
 
Join Date: Nov 2001
Posts: 161
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
Valdare is on a distinguished road

You can buy a deep cycle Optima battery 34 series that are smaller than most 27 series. The AMG Optima can actually be installed upside down side ways and are water proof.

I have seen rv trailers that when plugged into the car via the lighting plugs also has a charger, charging up the extra rv battery.

There are many ways to accomplish your simple needs with out going overboard. The solar charger really works well, we use one on a boat hoist to keep the boat battery charged and the hoist battery charged using a simple cig. lighter adapter.

Good Luck,

John
Reply With Quote Share with Facebook
  #8  
Old 07-12-2006
Member
 
Join Date: Mar 2006
Location: Charleston SC
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
toastchee is on a distinguished road
Thanks guys, I now have a marine batt and deep cycle charger. I can build from there. Ideally I'd like to power my CPAP snoring machine overnight on the boat. Any other sailors have one of those?
Reply With Quote Share with Facebook
  #9  
Old 07-12-2006
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
What is a CPAP snoring machine???
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #10  
Old 07-13-2006
Member
 
Join Date: Jun 2006
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
infonote is on a distinguished road
You can try a combination of solar and wind energy to charge your batteries
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Use of AGM/Glass mat batteries santorinidon Gear & Maintenance 7 07-15-2006 12:59 AM
Alternator and Batteries NewsReader Mass Bay Sailors 2 06-27-2006 06:09 AM
Re: Alternator and Batteries NewsReader Mass Bay Sailors 0 06-25-2006 06:15 PM
Batteries - Mixing Different Ah ken346 Gear & Maintenance 1 05-27-2001 11:59 AM
Batteries & Charging capedory30 General Discussion (sailing related) 2 04-27-2001 04:05 PM


All times are GMT -4. The time now is 10:41 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012