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 30-06-2018, 16:34   #16
Registered User

Join Date: Jun 2007
Location: SW Florida
Boat: FP Belize, 43' - Dot Dun
Posts: 3,823
Re: Trojan T-105 vs. Lifeline

Quote:
Originally Posted by kmacdonald View Post
The 6 volt golf cart batteries are the best bang for the buck but there are valid reasons to have AGM or lithium. Depends on priorities, climate, charge abilities, etc.
It comes down to how many times you cycle your batteries a year. 100 cycles/year, FLA are by far the cheapest, 1+ cycle per day, something different.
DotDun is offline   Reply With Quote
Old 30-06-2018, 16:40   #17
Registered User
 
DumnMad's Avatar

Join Date: Mar 2012
Location: Nelson NZ; boat in Coffs Harbour
Boat: 45ft Ketch
Posts: 1,559
Re: Trojan T-105 vs. Lifeline

Quote:
Originally Posted by Oceansailor View Post
And will there be any significant difference for the last 20 % up to 100 % SOC? The last question is important as many cruisers use solar for top charging.
For your 880AH bank set at 14.9v, how much solar is ideal for the 20% top-up during an average good sunny day ?
DumnMad is offline   Reply With Quote
Old 30-06-2018, 21:10   #18
cruiser

Join Date: Jan 2017
Boat: Retired from CF
Posts: 13,317
Re: Trojan T-105 vs. Lifeline

So many variables.

That big a bank 1000W is needed for solar-only.

Regular genny runs in the morning can get away with maybe 4-600W.

At the equator always sunny, maybe 30% less but as always more is better.

LFP no need for solar at all, few hours of genny per week is plenty.
john61ct is offline   Reply With Quote
Old 08-07-2018, 07:46   #19
Registered User

Join Date: Jan 2011
Posts: 281
Re: Trojan T-105 vs. Lifeline

Have 450W solar. It is more or less impossible to reach 100% SOC as fridge/freezer is running during the day. There is not enough left over to do the last 20% charge. I do not really want to increase solar as it gets cluttered.
Oceansailor is offline   Reply With Quote
Old 08-07-2018, 18:11   #20
Registered User
 
DumnMad's Avatar

Join Date: Mar 2012
Location: Nelson NZ; boat in Coffs Harbour
Boat: 45ft Ketch
Posts: 1,559
Re: Trojan T-105 vs. Lifeline

Quote:
Originally Posted by Oceansailor View Post
Have 450W solar. It is more or less impossible to reach 100% SOC as fridge/freezer is running during the day. There is not enough left over to do the last 20% charge. I do not really want to increase solar as it gets cluttered.
Thanks. I understand. More would be good but....
DumnMad is offline   Reply With Quote
Old 09-07-2018, 15:20   #21
cruiser

Join Date: Jan 2017
Boat: Retired from CF
Posts: 13,317
Re: Trojan T-105 vs. Lifeline

That must be a big freezer, or far from the equator in winter.

An early-AM genny run with a higher-CAR bank would help, but I'd first look at improving the freezer's efficiency.
john61ct is offline   Reply With Quote
Old 09-07-2018, 15:51   #22
Registered User

Join Date: Jan 2011
Posts: 281
Re: Trojan T-105 vs. Lifeline

Quote:
Originally Posted by john61ct View Post
That must be a big freezer, or far from the equator in winter.

An early-AM genny run with a higher-CAR bank would help, but I'd first look at improving the freezer's efficiency.

Better/more insulation would be big advantage. Unfortunately not easy to accomplish.

My energy budget is about 10A/h when on anchor. Solar panels are installed horizontal and will have some shadows, which means morning and evening sun is pretty inefficient.
Oceansailor is offline   Reply With Quote
Old 09-07-2018, 17:00   #23
Moderator Emeritus
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
Re: Trojan T-105 vs. Lifeline

Quote:
Originally Posted by Oceansailor View Post
Have 450W solar. It is more or less impossible to reach 100% SOC as fridge/freezer is running during the day. There is not enough left over to do the last 20% charge. I do not really want to increase solar as it gets cluttered.


That is the textbook case for a little Honda. Fill it half full of gas in the morning and let it run until it quits
a64pilot is offline   Reply With Quote
Old 09-07-2018, 19:44   #24
cruiser

Join Date: Jan 2017
Boat: Retired from CF
Posts: 13,317
Re: Trojan T-105 vs. Lifeline

With a quality charger putting as many amps as possible into the bank

hence higher CAR being an advantage.

And ideally the genny run is complete just as the SC starts putting out decent amps.

PS units on that budget would be 10 **AH** per hour, or 240AH per day. Which I think would actually be more than those panels could put into a lead bank per day?
john61ct 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
Determining the age of Trojan T-105's unbusted67 Electrical: Batteries, Generators & Solar 5 24-06-2014 06:04
Trojan T-105's versus Crowns LBW399 Electrical: Batteries, Generators & Solar 17 29-12-2013 20:04
Trojan T-105 6v Batteries VirtualVagabond Electrical: Batteries, Generators & Solar 35 09-06-2013 20:44
Trojan t-105 in So. Cal Thermal Electrical: Batteries, Generators & Solar 0 06-12-2007 21:54
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 04:43.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.