Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-12-2013, 11:31   #1
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Picking New Battery Charger

I'm about to junk our IOTA 55 watt thing, it was obviously never intended for the marine environment.

I've been trying to find a 40 amp, 2 bank charger made for boats. I have two banks of batteries, 220 amp hour each bank. I've been searching the internet looking at Blue Sea etc. but just about every charger I've found so far that has a 40 amp output also has three outputs.

Does anyone know of a good two bank, 40 amp, multi stage, smart charger?

Would it hurt a three-bank charger to just leave one of the outputs unconnected?
__________________

__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 02-12-2013, 12:12   #2
Registered User

Join Date: May 2012
Location: Western Wisconsin
Boat: O’Day Daysailer II, 17'
Posts: 572
Re: picking new battery charger

Quote:
Originally Posted by Canibul View Post
I'm about to junk our IOTA 55 watt thing, it was obviously never intended for the marine environment.

I've been trying to find a 40 amp, 2 bank charger made for boats. I have two banks of batteries, 220 amp hour each bank. I've been searching the internet looking at Blue Sea etc. but just about every charger I've found so far that has a 40 amp output also has three outputs.

Does anyone know of a good two bank, 40 amp, multi stage, smart charger?

Would it hurt a three-bank charger to just leave one of the outputs unconnected?
Is one of the 220 amp-hour banks for starting? That's a lot of power for starting, about the size for a 200 horsepower diesel. If the engine battery for starting is not one of the two banks, then of course the third output would go to the starting battery. I have never seen any warnings about letting an output from a charger be unattached.
__________________

__________________
westwinds is offline   Reply With Quote
Old 02-12-2013, 12:18   #3
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 12,385
Re: picking new battery charger

1. Agree with Westwinds on leaving an unused output from the charger. Never heard it as a problem.

2. If you junk the IOTA give it to me and I'll pay shipping to FL. Well, depending on how much it costs to ship from the T&C.

3. Why not combine the banks (they are all house banks, yes?) and charge them all on a one output charger? I used to keep two banks but based on research and recommendations from all the experts I am not set up with one house bank and one starter.
__________________
The water is always bluer on the other side of the ocean.
skipmac is online now   Reply With Quote
Old 02-12-2013, 12:55   #4
Registered User
 
Rusty123's Avatar

Join Date: Sep 2013
Location: Poulsbo, Washington
Boat: Spirit 28
Posts: 195
Quote:
Originally Posted by Canibul View Post
I'm about to junk our IOTA 55 watt thing, it was obviously never intended for the marine environment. I've been trying to find a 40 amp, 2 bank charger made for boats. I have two banks of batteries, 220 amp hour each bank. I've been searching the internet looking at Blue Sea etc. but just about every charger I've found so far that has a 40 amp output also has three outputs. Does anyone know of a good two bank, 40 amp, multi stage, smart charger? Would it hurt a three-bank charger to just leave one of the outputs unconnected?
What happened to your Iota? (I have the same model).
__________________
Rusty123 is offline   Reply With Quote
Old 02-12-2013, 13:35   #5
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: picking new battery charger

I have seen previous threads where the IOTA got very high reviews. They were IOTA 55 with the IQ module. Is there something we don't know about? What is your reason for getting rid of it?
__________________
The Blue Dot Campaign. This Changes Everything.
DeepFrz is offline   Reply With Quote
Old 02-12-2013, 14:23   #6
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,830
Re: Picking New Battery Charger

Chargers I've seen just have diodes in the output to isolate banks.
All the juice is coming from one DC source.
No problem leaving one or all of them disconnected.
__________________
Memento,homo, quia pulvis es, et in pulverem reverteris.
senormechanico is offline   Reply With Quote
Old 02-12-2013, 15:07   #7
Registered User
 
engele's Avatar

Join Date: Oct 2009
Location: On the boat -> PNW -> Mexico -> Central America
Boat: Seafarer 38
Posts: 360
Avoid the Marinco/Guest three bank chargers. We have had two catch fire. I think both times was likely due to a power surge, but still, catching fire is a bit extreme, even when the power source is likely faulty.
engele is offline   Reply With Quote
Old 02-12-2013, 15:41   #8
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 8,569
Images: 14
Re: Picking New Battery Charger

Something like this perhaps? ours has worked perfectly for 5 years now. The instructions say to join any spare outputs to one that is in use. Since we only have one house bank and don't bother charging the engine start battery I made up a couple of little jumper wires.

Sterling Power Products: ProDigital

Or the newer version:

Sterling Power Products: ProCharge Ultra
Attached Thumbnails
Click image for larger version

Name:	PCD.jpg
Views:	86
Size:	21.3 KB
ID:	71413  
__________________
Moody 31 - April Lass
Pete7 is online now   Reply With Quote
Old 02-12-2013, 16:19   #9
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: Picking New Battery Charger

Thanks for all the info and advice. The way the boat is now wired, I have two banks of house batteries, with a 1, 2, off and 1+2 switch between them and the house. Each bank is in an engine room with a small diesel, on a catamaran. The charger is a single output that is wired to bank 2. There's no way to charge bank 1 without switching to "1+2" on the battery switch. All the output of the IOTA goes to bank 2.

Now, I am having issues and chasing down gremlins and shorts in this old boat. I like to charge and maintain the batteries, with the house disconnected. At the moment, I can't charge bank 1 without hooking both banks to the house, which has a short in it. I need to put a disconnect switch between the combining switch and the house, but I'd have to Mickey Mouse two lugs to do that. I don't have any way to make up short battery cables with a good lug on each end.

I also just noticed today that the house banks are not fused between them and the house wiring. I found a new Blue Sea 300 amp fuse in the spares locker, so I figure previous owner had planned to install it. Ain't it fun buying old boats?

As for the IOTA, we were hit by lightning on the way down here last year. Fried just about everything on board that was hooked up to 12volts and turned on. Both fuses blew on the IOTA. Since then, it's been suspect. It sometimes has no measurable output at all ( using a digital multimeter looking at volts ) . The label says the max is 13.6, but I don't see that. I see 12.6, or sometimes zero. Last time I checked the fuses one of them was intact, but the plastic was melted. It's starting to show signs of corrosion. I have been thinking that if I just replaced it with a two bank charger, I could run wires to each house bank independently.

The charger installation location on this boat exposes it to rain and splash when the engine room door is open. The IOTA has a fan on the top of it and the chassis is steel, with a lot of open ventilation holes. I think it would be great in an RV.

Or in a more protected location on a boat.
__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 02-12-2013, 16:29   #10
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Picking New Battery Charger

Okay, not the fault of a charger that has almost survived a lightening strike. I can understand why you need a new one. One in each engine compartment would probably help you maintain the health of your batteries for a much longer period.

I doubt that you will find any charger that gets salt spray and rain splashed on it that will last for any length of time. I think they all say to put them in a protected area.
__________________
The Blue Dot Campaign. This Changes Everything.
DeepFrz is offline   Reply With Quote
Old 02-12-2013, 16:30   #11
Registered User

Join Date: May 2008
Location: daytona beach florida
Boat: csy 37
Posts: 2,844
Images: 1
Re: Picking New Battery Charger

now i feel a little bit better; i am about to order an iota 45....
__________________
onestepcsy37 is offline   Reply With Quote
Old 02-12-2013, 16:37   #12
Registered User
 
Rusty123's Avatar

Join Date: Sep 2013
Location: Poulsbo, Washington
Boat: Spirit 28
Posts: 195
In case you haven't seen it, please read this article, which addresses several of your questions.

http://www.pbase.com/mainecruising/i...attery_charger
__________________
Rusty123 is offline   Reply With Quote
Old 02-12-2013, 18:18   #13
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,162
Re: Picking New Battery Charger

If you want a bullet proof battery charger designed for marine use, buy a Newmar.
I've been selling them for more than twenty years and in all that time we've had only one come back not working. It was determined that the charger had been under salt water. Their Phase Three series is American Bureau of Shipping approved.
Newmar Phase Three Battery Chargers

I have a PT-40 on my own boat.
__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is offline   Reply With Quote
Old 02-12-2013, 18:48   #14
Senior Cruiser
 
Rocketman's Avatar

Cruisers Forum Supporter

Join Date: Apr 2011
Location: Naples, FL
Boat: Beneteau Oceanis 400
Posts: 668
Re: Picking New Battery Charger

Thanks for this thead, I myself am currently looking for a 40 amp charger, the xantrax charger that I installed 2 years and a month ago , just out of waranty, has craped out for no reason, so don't buy that one, I have read all the reviews and apearantly this is a comon problem with the xantrex chargers.

I am concidering a inverter/charger and would like to hear what others think about this, and what brands to concider and also stay away from.
__________________
Rocketman is offline   Reply With Quote
Old 02-12-2013, 19:10   #15
Registered User
 
wingless's Avatar

Join Date: Aug 2013
Boat: 2000 Searay 380 Sundancer
Posts: 487
Re: Picking New Battery Charger

The Charles Industries C-Charger 5000SP Series is an excellent choice.

These are built w/ a large aluminum extrusion "bathtub" to remove the heat. These are built very well.

This has been a workhorse on my boat for many years and I highly recommend this charger.

Be certain to select an appropriate charger output current, that is selected for both the quantity of batteries and for the battery topology. An AGM battery wants a charger w/ at least 0.2C (more than 20A for a 100Ah battery), while a flooded cell battery wants C/10 (10A for a 100Ah battery).

Here is the Lifeline AGM Technical Manual w/ charging rate information on page 19 of 36. Here is the Interstate Battery Deep Cycle Charging FAQ w/ information on charging flooded-cell batteries.
__________________

__________________
2000 SeaRay 380 Sundancer Mercruiser
454 MAG MPI Horizon 380hp / Westerbeke 7.0KW BCGB
many cool mods
wingless is offline   Reply With Quote
Reply

Tags
battery, charger

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:01.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.