SailNet Community - Reply to Topic

   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 > On Board > Gear & Maintenance > Battery charge recommendations?
 Not a Member? 


Thread: Battery charge recommendations? Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
12-18-2007 10:20 PM
thekeip By all means, go for the temp sensor...it IS necessary if your charger knows what to do with it.
Howard
12-18-2007 10:17 PM
thekeip Just a note...If you get to your boat regularly, perhaps live aboard (and can stand the hum), like to baby sit, etc., there isn't a better battery charger for your money than a ferro resonant. They are easily the most versatile chargers ever created...but NOT for AGM's. As an evolutionary product, AGM's have become very finely adapted to their working environment, but very finicky when it comes to their diet. You really do need to pay attention to their charging regimen..you'll need a programmable charge routine both on the alternator and shore charger sides. You'll be glad you did.
Howard Keiper
Sea Quest
Berkeley
12-18-2007 06:21 PM
Cruisingdad
Quote:
Originally Posted by camaraderie View Post
Killarny...so for your house bank you have about 500 ah's capacity and 250 usable amp hours before recharging is needed. No change in recommendations. Since AGM's can accept unlimited current there is no need for a temperature sensor...just a good 3 stage charger.
Hmm, that is intersting. No need for temp sensor? I don't know if I agree with that.

It is true that wets may be more suscptible to temperature differentiation-voltage than agm's... but agm's are too. If your agm is cold, you would increase the voltage and hot, decrease it. The cost of a temp gauge is nto that much anyways.

- CD

12-18-2007 06:05 PM
camaraderie Killarny...so for your house bank you have about 500 ah's capacity and 250 usable amp hours before recharging is needed. No change in recommendations. Since AGM's can accept unlimited current there is no need for a temperature sensor...just a good 3 stage charger.
12-18-2007 05:32 PM
jonlgauthier
Iota chargers

I checked out Iota when I was designing Beausoleil's electrical system. They're well built, inexpensive, and are capable of bulk/absorption/float mode with an optional smart regulator (which can be ordered pre-installed). Stack a few in parallel and you can charge just about any battery bank. Good buy for the money.

However, there was one drawback that was a killer for me. There is no mechanism for sensing battery temperature - which is mandatory if you want to charge a battery bank in as little time as practical (blast the batteries at the highest rate they can absorb without gassing). For me to keep genset running times to a minimum while on the hook, it was a deal breaker. The other problem for me is that they aren't available in a universal AC version (120-240V/50-60Hz) for international cruising.

For someone who spends most of their time in a slip, the Iota's are a good bang for the buck.
12-18-2007 01:03 PM
killarney_sailor
Battery sizes

I have four batteries-
1) two house 8Ds
2) engine start 4D (seems like a lot for a 58 hp engine)
3) genset start group 27
12-18-2007 12:48 PM
sailingdog I'd have to ask what size your battery banks are. The larger the banks, the larger a charger you'll need, especially with AGMs, which have a much higher charge acceptance tolerance than wet cells do.

Xantrex, Iota, and Outback all make a good unit.
12-18-2007 11:12 AM
Cruisingdad I have heard VERY good things about Outback chargers, but I only own a Outback solar charger, so cannot comment on the other. I will say the ONLY reason I did not buy an outback charger/inverter was because it would not fit where I wanted to mount it. THe Xantrex fit perfectly.

I currently have a Xantrex which I have been very happy with (it is actually a Prosine 2.0 Inv/Chg - but I assume it has the same functionality as the charger). I would buy one again without hesitation. You can set the breaker size on your boat so that it is always maximizing the input/output to the batteries without tripping the breaker. You can also set the battery type (including your own charge voltage rate) at the remote on the 2.0. It automatically switches on/off based upon input voltage from dock... not from inverter. I have nothing but positives to say. Of course, again, this is the combo unit and I am making the ASSUMPTION it is the same as the charger.

I realize that Iota has been mentioned. I know Bill Trayfors always recc's them - which carrys a lot of weight.

Catalina pretty much uses Charles. I have no real complaints against them other than I like the functionality of the Xantrex better (the remote, for example and the ability to set the size of the bank and breaker to keep from tripping) and that some of them need to be sent back to the factory to change battery types (wet versus agm/gell).


Now that did not answer your question completely, but if I had to rank them:

1) Outback
2) Xantrex
3) Iota (simply because I do not know enough about them).
4) Charles

THose are my opinions. Hope that helps.

Regards,

- CD
12-18-2007 11:07 AM
camaraderie Killarny...yes a good 3 stage charger is necessary for your AGM's...you don't say the SIZE in amp hours of your banks but since you will be plugged in full time to the dock it is of little importance on a daily basis what size charger you use. Where charger size WILL be of importance is when you are on the hook and out cruising around and depleting those battery banks and need to re-charge at a dock or with a generator. I will guess that you have 400AH of capcity...which means you will have 200 AH's to recharge when off cruising. This will take 5 hours to replenish to about 90% with a 40 amp charger so an overnight stay at a marina will get you fully topped off. You can substitute your actual numbers for my assumption to see if it makes sense for you.
Living at the dock with the DC stuff in heavy use...you're still gonna be using less than 20amps DC so even a small charger will suffice to keep you topped up full time as long as you remain plugged in.
12-18-2007 11:00 AM
CapnHand The IOTA chargers are designed and built well, providing a lot of value for their low cost. Check ebay for some good deals. $100 will get you a 55A charger, $155 for 75A.
This thread has more than 10 replies. Click here to review the whole thread.

 
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


All times are GMT -4. The time now is 12:08 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

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.