Cruisers Forum
 


Join CruisersForum Today

View Poll Results: If you are currently using LiFePO4 cells for a house bank, propulsion, or both.
Lead is dead, never going back 49 94.23%
Big mistake, going back to lead. 3 5.77%
Voters: 52. You may not vote on this poll

Reply
 
Thread Tools Rate Thread Display Modes
Old 14-11-2013, 13:58   #16
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,514
Re: A poll Happy with LiFe (PO4)?

Another VERY happy camper here.
200 aH @ 12 volts on the boat.
700 aH @ 24 volts in the house's emergency / solar grid tie backup system.
__________________

__________________
Seen on Facebook:

"The Flat Earth Society Has Members Around the globe"

senormechanico is offline   Reply With Quote
Old 14-11-2013, 14:18   #17
Marine Service Provider
 
Maine Sail's Avatar

Join Date: Jan 2007
Location: Maine
Boat: CS-36T - Cupecoy
Posts: 2,974
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by deckofficer View Post
Maine,

I think you will see cycle life as advertised. I base this on how conservative they rated these cells in a-hr. After 2 years of exchanging experiences with these cells, most all are in agreement that for usable a-hr, whatever size your lead bank was, your LiFePO4 bank can be 1/2 that. It is hard for me to imagine that the manufacturers would be so conservative in capacity rating and then optimistic in cycle life rating.

So my prediction as of 11-14-2013, if in the hands of a competent user, actual cycle life will also surpass advertised claims.
Bob,

I hope your prediction is far more accurate than mine!!! I would love to be wrong on this one...
__________________

__________________
Marine How To Articles
Maine Sail is offline   Reply With Quote
Old 14-11-2013, 15:18   #18
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by Maine Sail View Post
Bob,

I hope your prediction is far more accurate than mine!!! I would love to be wrong on this one...
You have 200+ cycles, has your capacity dropped a meaningful amount? I have what I believe is lithium ion in my iphone which in current advertised claims has 1/3 the cycle life of LiFePO4 cells. I purchased this phone when it was first offered summer of 2007 and have roughly 600 cycles and still going with some reduced capacity. I don't need the newest offering of the iphone as so many others do, if it still works I keep using it. In modern electronics it appears to me the cycle life exceeds the end user's willingness to keep using it.

The point I'm trying to make is the lithium battery in my 7 1/2 year old iphone wasn't rated for the cycles or life span I've gotten and the LiFePO4 chemistry is rated at 3 times the cycles before dropping to 80% rated capacity.

Maine, I hope that now your bank is in the shop, you are able to cycle it twice a day. In your capable hands I think 2000 cycles wil be a walk in the park.
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 14-11-2013, 15:55   #19
Registered User
 
SV Sea Monkey's Avatar

Join Date: Aug 2013
Location: Annapolis, MD
Boat: Island Packet 35
Posts: 112
I hear a common theme that LiFePO4 is great for competent DIYers but not quite there for the average boater yet. There's also a concern (eloquently expressed by Maine Sail) that those same average boaters might jump too soon and give this technology a bad name. I'm following all this with great interest, and if I needed a new bank now I would go with LiFePO4--but I am curious about what is currently scaring off others. So for those who recently replaced their batteries with something other than LiFePO4, why did you make that choice? I replaced mine with a larger AGM bank a few months ago because the batteries were completely dead (new to me boat), and I didn't know enough about LiFePO4 to feel confident making that switch. I also had a long list of other boat projects, and didn't want to research batteries at the time. I started to go with Sam's club golf cart batteries, but realized that installing them level in the available space I had would seriously cramp my bank size, and make it a real pain to check electrolyte levels. Six Group 31 AGMs went in easily and allowed me to focus on other projects. If I were facing that decision today, I would go LiFePO4.

...anyone else?
__________________
SV Sea Monkey is offline   Reply With Quote
Old 14-11-2013, 16:12   #20
Marine Service Provider
 
SV THIRD DAY's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Morro Bay, CA
Boat: 1978 Hudson Force 50 Ketch
Posts: 3,353
Send a message via Skype™ to SV THIRD DAY
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by SV Sea Monkey View Post
--but I am curious about what is currently scaring off others.

$$$$$$$....

As a live aboard on a mooring I'm planning a Li bank soon these T-105's just are not living up to the glory so many people talk about and I'm on my second new set in 5yrs.
__________________
Rich Boren Living Aboard in Morro Bay, CA and the owner of:
Cruise RO Water High Output Water
Technautic CoolBlue Refrigeration
SV THIRD DAY is offline   Reply With Quote
Old 14-11-2013, 16:15   #21
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Quote:
Originally Posted by SV THIRD DAY View Post

$$$$$$$
Absolutely , that's the only reason , if they were $1 / amp hour we see a lot more people try them.

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 14-11-2013, 16:25   #22
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,048
Images: 12
Re: A poll Happy with LiFe (PO4)?

$$$$$ and the challenge of installation and re-engineering charging systems in our current cruising area.

Our next bank will be LiFePO after we get the expected remaining 4 years out of our current bank. I'm hopeful that timeframe will see significant advances in lowering costs and increasing ease of installation/use.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 14-11-2013, 16:55   #23
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Quote:
Originally Posted by colemj View Post
$$$$$ and the challenge of installation and re-engineering charging systems in our current cruising area.

Our next bank will be LiFePO after we get the expected remaining 4 years out of our current bank. I'm hopeful that timeframe will see significant advances in lowering costs and increasing ease of installation/use.

Mark
I don't think today they any more difficult to use then lead acid. BUT. That does not mean they are the same as lead acid. That's where people go wrong.

You can get away with out BMS , you can avoid balancing. but you must understand what you are dealing with.

Today you unwittingly buy LA chargers and LA compatible equipment , seemingly making it easy. It's not that lead acid is easy( or easier) , it's just someone else has done the thinking for you. You can buy similar setups with Li , but its not the same it's different

It will never be a truly " drop in replacement "
Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 14-11-2013, 17:06   #24
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: A poll Happy with LiFe (PO4)?

We have a "Big Mistake" vote. What happened Rich (SV Third Day)?
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 14-11-2013, 17:27   #25
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by goboatingnow View Post
Absolutely , that's the only reason , if they were $1 / amp hour we see a lot more people try them.

Dave
They are $1.10 per a-hr for the cells except the Balqon discount cells at $ 0.80 per cell. Did you mean $1 per a-hr for (4) cells in series (13 volts)?
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 14-11-2013, 17:49   #26
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by SV THIRD DAY View Post
$$$$$$$....

As a live aboard on a mooring I'm planning a Li bank soon these T-105's just are not living up to the glory so many people talk about and I'm on my second new set in 5yrs.
Does this mean you haven't used LiFePO4 cells?

This poll was only for current users ("If you are currently using LiFePO4 cells for a house bank, propulsion, or both."), not non-users with an opinion.

We are still at 100% satisfied even though the poll now indicates otherwise. That is why I only gave the poll two choices because I wanted black and white results.

Please, if your not using LiFePO4 cells, don't vote.
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 14-11-2013, 23:06   #27
Registered User
 
Wraith_Mac's Avatar

Join Date: Aug 2013
Location: Central Coast, NSW, Australia
Boat: Avon Rib, 65hp
Posts: 304
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by deckofficer View Post
Does this mean you haven't used LiFePO4 cells?

This poll was only for current users ("If you are currently using LiFePO4 cells for a house bank, propulsion, or both."), not non-users with an opinion.

We are still at 100% satisfied even though the poll now indicates otherwise. That is why I only gave the poll two choices because I wanted black and white results.

Please, if your not using LiFePO4 cells, don't vote.
Bob,
I may be be mistaken but I think the one negative vote was from Mainesail, not Rich, even though he [Mainesail] is personally happy with his choice.
Cheers,
Paul Mac
__________________
NEW SCIENCE: You fund the research and we provide the desired facts.
NEW ECONOMICS:See Above, obfuscation extra.
Wraith_Mac is offline   Reply With Quote
Old 14-11-2013, 23:59   #28
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by Wraith_Mac View Post
Bob,
I may be be mistaken but I think the one negative vote was from Mainesail, not Rich, even though he [Mainesail] is personally happy with his choice.
Cheers,
Paul Mac
I purposely made it a open to view votes so that folks looking for members with LiFePO4 experience would know who to contact. All anyone needs to do to see who voted is click on the number of votes for either choice. So like I said, still at 100% satisfaction among users.
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 15-11-2013, 00:04   #29
Registered User

Join Date: Nov 2011
Posts: 474
Re: A poll Happy with LiFe (PO4)?

If I had to choose one or the other, it would be LiFePO4. But, you also need to have enough money to buy enough batteries to handle your usage. They will last longer than lead acid if not abused, and you do need to hunt down the right information about how to use them. The charge controllers and such may need to be updated as well, but the technology will go towards these batteries more and more. Hopefully the price comes down a little and the components become more common..
__________________
SunDevil is offline   Reply With Quote
Old 15-11-2013, 01:22   #30
Marine Service Provider
 
Maine Sail's Avatar

Join Date: Jan 2007
Location: Maine
Boat: CS-36T - Cupecoy
Posts: 2,974
Re: A poll Happy with LiFe (PO4)?

Quote:
Originally Posted by Wraith_Mac View Post
Bob,
I may be be mistaken but I think the one negative vote was from Mainesail, not Rich, even though he [Mainesail] is personally happy with his choice.
Cheers,
Paul Mac
I was not the negative vote,,,
__________________

__________________
Marine How To Articles
Maine Sail is offline   Reply With Quote
Reply

Tags
batteries, housebank, lifepo4, lithium, poll

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



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:31.


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.