Reply
 
Thread Tools Display Modes
 
Old 03-02-2015, 02:26 PM   #1
Member
 
City: Portland, OR
Country: USA
Join Date: Jan 2013
Posts: 14
Trickle charging

I replaced my manual head with an electronic one, and also put in a waste tank monitor. I don't want to disturb my existing battery bank connections, so I have an extra deep cycle 12v battery that I want to dedicate to this new head system. But because the battery does not get the frequent charging, I'd like to get a trickle charger for this battery. It would have to stay connected 24/7, sort of connect-and-forget. Any recommendations and/or suggestions? Thank you.
__________________
Advertisement

crazyguamboy is offline   Reply With Quote
Old 03-02-2015, 02:55 PM   #2
TF Site Team
 
FlyWright's Avatar
 
City: California Delta and SF Bay
Country: Sacramento, CA, USA (boat in Vallejo)
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 10,187
Lead acid wet cell? Where will this battery reside, in a living space like the head cabinet?

If you have a good house battery bank and bus bar, wire is relatively cheap to allow a connection for a simple but substantial system improvement.

Sorry, can't recommend a dedicated float charger. Is your shore charger multi-bank capable?
__________________

__________________
Al

Custom Google Trawler Forum Search
FlyWright is online now   Reply With Quote
Old 03-02-2015, 03:08 PM   #3
Member
 
City: Portland, OR
Country: USA
Join Date: Jan 2013
Posts: 14
The battery is located in the engine room, close to the existing bank of batteries. It is roomy down there, and can accommodate space for a trickle charger. It's a wet cell. As for lead acid, I do not know. I do end up charging the battery every now and then, which is inconvenient, especially when nature calls.
crazyguamboy is offline   Reply With Quote
Old 03-02-2015, 03:19 PM   #4
Dauntless Award
 
Wxx3's Avatar
 
City: New York, NY
Country: USA
Vessel Name: Dauntless
Vessel Model: Kadey Krogen 42 - 148
Join Date: Jan 2013
Posts: 2,313
And why don't you want to hook it up to your house bank?

Otherwise there are plenty of small, smart chargers out there. Just go by a motorcycle store.
__________________
M/Y Dauntless, New York
a Kadey Krogen 42 Currently https://share.delorme.com/dauntless
Blog: https://dauntlessatsea.com
Find us: https://share.delorme.com/dauntless
Wxx3 is offline   Reply With Quote
Old 03-02-2015, 03:35 PM   #5
Guru
 
Bacchus's Avatar
 
City: Seneca Lake NY
Country: US
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 1,409
Crazy...

I too am curious why not connect to existing batt'y bank?

If you want to keep it separate here are some options...

I've used and happy with Battery Minders.
I've used them to maintain boat & RV batteries off season so a small (1 amp) unit suffices. They do make larger amp units. Their tech rep told me no problem leaving connected 24/7 when connected to 120V AC - if/when you disconnect from shore power & motor there is a small (?) draw from the battery and over a long period will draw a battery down. If these times are short I don't think there is a problem.

There are a lot of other options to charge this battery either from either house / start batt'y from alternator while running or charger when on shore power.
See Comparison - Battery Isolators & Combiners (post#4) in the Electrical Electronics & Nav Ref Mat'l Thread
__________________
Don
MS 34 HT Trawler
"Bacchus"
Bacchus is offline   Reply With Quote
Old 03-02-2015, 03:36 PM   #6
Guru
 
No Mast's Avatar
 
City: Atlantic Highlands, NJ
Country: US
Vessel Name: Moana Huaka'i
Vessel Model: Selene 53
Join Date: Dec 2014
Posts: 816
I have to say I've not encountered a dedicated head battery before.
In any event, set it and forget it sounds like a bad approach.

If the boat was properly wired, from your house bank there should be both a positive and a negative bus where all connections are routed to. I believe you should route this head and monitor to there.

Besides, where would this charger be plugged into? an AC outlet in the boat? So you're taking DC power, converting it to AC so you can transfer it back into DC to that battery. Rather inneficient.
No Mast is offline   Reply With Quote
Old 03-02-2015, 05:43 PM   #7
Guru
 
kchace's Avatar
 
City: Brookline, NH
Country: USA
Vessel Name: Blue Heaven
Vessel Model: Albin 43 classic double cabin, twin 135 Lehmans
Join Date: Sep 2013
Posts: 761
Have to agree with the sentiment here. Seems like a lot of work to "not" connect to your house bank which is the best source of power on your boat. However, if you must, I do know of a great charger setup that you can be confident leaving on. I have 2 different chargers from these folks and they are great.

http://www.amazon.com/OptiMate-Ampma...productDetails

Ken
kchace is offline   Reply With Quote
Old 03-02-2015, 06:18 PM   #8
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 7,573
I have a 25w(more than it needs) solar panel charging my genset battery, via a simple controller. That would be an easy solution,no charger power source required.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 03-02-2015, 06:55 PM   #9
Guru
 
Join Date: Aug 2012
Posts: 741
[QUOTE=Bacchus;312929]Crazy...

Their tech rep told me no problem leaving connected 24/7 when connected to 120V AC - if/when you disconnect from shore power & motor there is a small (?) draw from the battery and over a long period will draw a battery down. If these times are short I don't think there is a problem.

/QUOTE]

Ditto. I left one on a virtually new genset start battery during seven month winter storage. The boat (battery chargers) got plugged in to shore power about once per month for a 24 hr period over the winter. That battery was destroyed when I got back in the Spring. The trickle charger was acting as a shunt. No problem as long as there's input power to the trickle charger.
__________________

Underway is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 09:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012