Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 25-10-2020, 00:14   #1
Registered User

Join Date: Oct 2017
Posts: 63
Trojan T125

People with Trojan batteries what do you have your Bulk/Abs set Please?
Trojan data show 14.82v which seen high to me .
I asking because my two years old batteries have lost most of their capacity and I am starting to think the reason why is because there been over charge as there are set at 14.82v Abs voltage.
Many thanks
medsailor1 is offline   Reply With Quote
Old 25-10-2020, 02:02   #2
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 39,031
Images: 241
Re: Trojan T125

T125s are FLA batteries.
Do you have a “smart” multi-step charger (bulk 14.8V, absorption 14.2V, & float etc 13.6V), with temperature compensation (0.0028 volt per cell for every 1F above or below 77F ?
Do your batteries off-gas under charge? (Yes = overcharge)
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is online now   Reply With Quote
Old 25-10-2020, 02:27   #3
Registered User

Join Date: Oct 2017
Posts: 63
Re: Trojan T125

Quote:
Originally Posted by GordMay View Post
T125s are FLA batteries.
Do you have a smart multi-step charger (bulk 14.8V, absorption 14.2V, & float etc 13.6V), with temperature compensation (0.0028 volt per cell for every 1F above or below 77F ?
Do your batteries off-gas under charge? (Yes = overcharge)
Most of the charging is by MPPT off solar . Odd time we use our Gen ,
Two setting on my Victron MPPT
Absorption voltage set @18.2v
Float voltage Set @13.6v
There no bulk voltage and as I understand it Bulk/Abs is the same .
I wouldn't know if my batteries gas off under charge as there under are bed but when I water them once a month , there on float before they get watered and at that point there are bubbling .

It seen there Trojan are more trouble then what they worth .
Cheap LA batteries you fix and leave and they last much longer then the Trojan now only two years old .
medsailor1 is offline   Reply With Quote
Old 25-10-2020, 08:45   #4
Registered User

Join Date: Jun 2013
Location: canada
Posts: 3,224
Re: Trojan T125

If you are mainly solar charging. Likly they are not getting full. Which is death of batteries.

14.8 is correct

Trojans are among the best.
smac999 is offline   Reply With Quote
Old 25-10-2020, 09:23   #5
Registered User
 
NYSail's Avatar

Join Date: Jan 2012
Location: Long Island, New York
Boat: Beneteau 423 43 feet
Posts: 647
Re: Trojan T125

With my t125s I set alt (mc614) at 14.8 1hr bulk, 14.7 3hr absorb and 13.5 float. Batteries now on third second season and still no issues.

Greg
NYSail is offline   Reply With Quote
Old 25-10-2020, 10:37   #6
Marine Service Provider

Join Date: Dec 2009
Location: St Augustine, FL
Boat: Woods Vardo 34 Cat
Posts: 3,661
Re: Trojan T125

I have T105s as the 125s were too tall.
They for sure are not the batteries they used to be but I replaced 7 y/o gells in January. Glad I did may go to Lithium next or cheap Plomb bats in Fiji next year.

I do have my charging set to 14.8 but as it's mainly only solar I rarely touch on that voltage. Noticed lately one cell seems to have water/acid coming out a bit when topped up all the way. Maybe a bad omen?
__________________
@mojomarine1
Boatguy30 is offline   Reply With Quote
Old 25-10-2020, 10:59   #7
Registered User

Join Date: Oct 2017
Posts: 63
Re: Trojan T125

Quote:
Originally Posted by smac999 View Post
If you are mainly solar charging. Likly they are not getting full. Which is death of batteries.

14.8 is correct

Trojans are among the best.
Getting full charge or not at all with solar depend on how much you use them ,
what your uses is and the amount of Watts you have .
Mine reach float most days , thus I know because the current goes down to 3A and lower plus the voltage drop to 13.5v so unless some one know some thing other wise the current dropping indicate to me they on float .
What I have notice is else where Trojan have 14.7v as there Abs which is why I posted here to see what others people setting are , I started to wonder if mine have been over charged at 14.82v
medsailor1 is offline   Reply With Quote
Old 25-10-2020, 11:03   #8
Registered User

Join Date: Oct 2017
Posts: 63
Re: Trojan T125

Quote:
Originally Posted by NYSail View Post
With my t125s I set alt (mc614) at 14.8 1hr bulk, 14.7 3hr absorb and 13.5 float. Batteries now on third second season and still no issues.

Greg
Greg can you explain how you can use them setting please?
Surly if your charging at 14.8v on Bulk for one hour how do they get fully charge mine are on Bulk charge for most of the day before going into Abs and that don't happen every day .
Or have I miss understood your posting ?
medsailor1 is offline   Reply With Quote
Old 25-10-2020, 11:21   #9
Registered User

Join Date: Feb 2009
Posts: 2,229
Re: Trojan T125

Quote:
Originally Posted by medsailor1 View Post
Greg can you explain how you can use them setting please?
Surly if your charging at 14.8v on Bulk for one hour how do they get fully charge mine are on Bulk charge for most of the day before going into Abs and that don't happen every day .
Or have I miss understood your posting ?
I agree it makes no sense in having a voltage limitation on bulk charging. Bulk charging by definition is taking everything your charging source can provide until your voltage reaches your absorption setting and then transforms into absorption mode....
motion30 is offline   Reply With Quote
Old 25-10-2020, 11:21   #10
Registered User
 
NYSail's Avatar

Join Date: Jan 2012
Location: Long Island, New York
Boat: Beneteau 423 43 feet
Posts: 647
Re: Trojan T125

At the suggestion of Maine Sail, who I bought my 150 amp balmar alt / mc614 regulator from (best price and great customer service), he suggested the time periods. When I run my engine my batteries top off by the time it hits float. Alt is downgraded to i thing 130.

My shore power charger is a mom programmable 2005 Xantrex 40 amp...... takes longer.


Greg
NYSail is offline   Reply With Quote
Old 25-10-2020, 11:23   #11
Registered User

Join Date: Feb 2009
Posts: 2,229
Re: Trojan T125

According to Trojan on the t105s, they recommend an absorption time of 4 hours at 14.8 volts
motion30 is offline   Reply With Quote
Old 25-10-2020, 11:38   #12
Registered User

Join Date: Oct 2017
Posts: 63
Re: Trojan T125

Quote:
Originally Posted by NYSail View Post
At the suggestion of Maine Sail, who I bought my 150 amp balmar alt / mc614 regulator from (best price and great customer service), he suggested the time periods. When I run my engine my batteries top off by the time it hits float. Alt is downgraded to i thing 130.

My shore power charger is a mom programmable 2005 Xantrex 40 amp...... takes longer.


Greg
As you can see I mostly charge by solar , we full time liveaboard and when we are on the move we like to sail as much as we can ,
I hope this don't sound rude as it not ment to be,
but your Balmar alt don't really help my problem ,
All I can say is most people think they batteries are fully charge just because their reg switch off and many times I been told by people that their batteries are fully charge by 10 or 11am which can be confusing although I come to realise this is very rarely the case but cool if they think so .

My posting was mainly to find out what others have for their setting on the MPPT ,
I'm no expert other wise I wouldn't be asking the question here but I know enough to know there something wrong for my batteries to lose most of their capacity in two years .
medsailor1 is offline   Reply With Quote
Old 25-10-2020, 11:41   #13
Registered User
 
NYSail's Avatar

Join Date: Jan 2012
Location: Long Island, New York
Boat: Beneteau 423 43 feet
Posts: 647
Re: Trojan T125

Yea just so you know I am not expert of batteries or electrical systems. I have been learning over the years reading asking questions and doing. So far the settings Maine Sail gave me work out just fine and do the job. I am also plugged in 4 days a week...... so maybe that had something to do with his times.

Greg
NYSail is offline   Reply With Quote
Old 25-10-2020, 11:44   #14
Registered User
 
NYSail's Avatar

Join Date: Jan 2012
Location: Long Island, New York
Boat: Beneteau 423 43 feet
Posts: 647
Re: Trojan T125

I also have a battery monitor so I see soc usage etc.....

I was just stating what my charge profile is set as for t125s and the only way I can set the profile is with the balmar regulator.

Good luck

Greg
NYSail is offline   Reply With Quote
Old 25-10-2020, 11:45   #15
Registered User

Join Date: Oct 2017
Posts: 63
Re: Trojan T125

Quote:
Originally Posted by motion30 View Post
According to Trojan on the t105s, they recommend an absorption time of 4 hours at 14.8 volts
Yes your right but then you read another of their data and they say 2.45v cell for Abs , so they really need to stop confusing people and make up their mind what it is .
If It is 14.7v that means I been over charging mine by .18v
Now how much different that would make I not sure .
medsailor1 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Trojan T105's cost increases Pblais Electrical: Batteries, Generators & Solar 29 15-09-2008 09:02
Trojan t-105 in So. Cal Thermal Electrical: Batteries, Generators & Solar 0 06-12-2007 22:54
Can this Trojan T105 be saved? senormechanico Electrical: Batteries, Generators & Solar 15 09-10-2007 14:43
6V Trojan VS 8D Batteries alanperry Electrical: Batteries, Generators & Solar 10 27-03-2007 11:33
Source for Trojan T-105 in Palm Beach or alternative battery svAlegria Electrical: Batteries, Generators & Solar 2 19-03-2007 13:46

Advertise Here


All times are GMT -7. The time now is 07:06.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.