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04-04-2014, 12:49 PM
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#1
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2 Rivet Member
2004 25' Safari
prattville
, Alabama
Join Date: Feb 2012
Posts: 23
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Lithium ion battery
Has anyone tried using lithium ion batteries for the house batteries? They weigh about 15 lbs each for a group 24 size and you can discharge down about 80%.
Price at 689.99 each is steep but can be recharged about 3 times as many times as a normal flooded battery.
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04-04-2014, 01:21 PM
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#2
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Moderator
2017 26' Flying Cloud
Alamo Heights
, Texas
Join Date: Aug 2006
Posts: 8,524
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So, at 689.99 each with 3x as many charge cycles, they make comparable economic sense to a $229 lead-acid battery, but I pay about $90 for a Group24 flooded deep cycle. At those prices you can get SLA/AGM batteries that'll work and play better with garden-variety 3-stage converters. The weight savings is nice, though. What's the amp-hour rating of the $690 group24 one you're seeing?
One I found on a casual search looks like it's group 31 in size, a nice light 25 lb, 80 amp-hours. However, they want $1050 for it. *cough*
__________________
— David
Zero Gravitas — 2017 Flying Cloud 26U | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. — Sir Winston Churchill
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04-04-2014, 01:51 PM
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#3
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2 Rivet Member
2004 25' Safari
prattville
, Alabama
Join Date: Feb 2012
Posts: 23
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lithium ion battery
The 24 group is 50 amp hrs but you can run the charge down below 80% so it is
about the same as flooded 80 amp hr battery. They can be charged with a normal 3 stage charger and are said to charge faster. But the big advantages are weight and can be mounted in any manner needed and no acid corrosion. They also hold voltage stable until near full discharge. If you compare price over 1200 cycles they are a bit cheaper than AGM's. I was trying to cut some weight my wife thinks there is no limit to what she can add " oh it's not that much more" I hear every time she wants to bring something new.
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04-04-2014, 02:59 PM
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#4
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Rivet Master
1994 30' Excella
Mississauga
, Ontario
Join Date: Jun 2004
Posts: 1,242
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those are the batteries that cause fires in airplanes recently. I'd rather have a $155.00(Canadian) 115 amp hr group 27 deep cycle fail than a $689.00 battery.
Saving weight is a great idea but not at that price.
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Al and Jean
TAC ON-3
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04-04-2014, 04:39 PM
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#5
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3 Rivet Member
Currently Looking...
Currently Looking...
Mineral Bluff
, Georgia
Join Date: Jan 2014
Posts: 130
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Quote:
Originally Posted by BigAl
those are the batteries that cause fires in airplanes recently.
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I'm certain there are those here who can correct me, but...
I think the batteries we are taking about are lithium iron, not lithium ion.
I further think the fire problem is with lithium ion, not lithium iron.
As an aside, I just replaced a 15 lb Odyssey battery in my Light Sport Sky Arrow with a 2.5 lb lithium iron by Aerovoltz. So far, so good.
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04-04-2014, 04:39 PM
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#6
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Rivet Master
1961 24' Tradewind
1969 29' Ambassador
1970 21' Globetrotter
Jamestown
, Tennessee
Join Date: Jul 2008
Posts: 1,783
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i think I will let others pioneer this one. My pair of 6 volt golf cart batteries (220 ah) cost under 200 bucks. i have to admit that on this trip they are starting to show signs of weakening.
That's the bad news. The good news is they will be 11 years old in june so they were certainly cost affective
__________________
Rick Davis 1602 K8DOC
61 tradewind, plus a few others
13 Ram 2500 TD
99 Dodge TD 577K miles
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04-04-2014, 04:45 PM
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#7
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by FastEddieB
I'm certain there are those here who can correct me, but...
I think the batteries we are taking about are lithium iron, not lithium ion.
I further think the fire problem is with lithium ion, not lithium iron.
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If memory serves— and memory serves less and less often as I get older— the planes that caught fire used Lithium Manganese. Tesla automobiles used Lithium Cobalt. Lithium Iron Phosphate is more heat-resistant, but has greater weight and lower stored energy, so it's not good for weight-critical applications like aircraft, but still pretty lightweight compared to AGM for the same amp-hours.
__________________
I thought getting old would take longer!
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04-04-2014, 05:35 PM
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#8
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Rivet Master
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction
, Arizona
Join Date: Sep 2012
Posts: 6,222
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We are installing four Lifeline GPL-6CT 6Vdc 300-amp hour batteries at 90 pounds each. When wired together in series and parallel, we will have 12Vdc and 600 amp-hour capacity. They will reside in a new battery box between the front of the trailer skin and the propane tanks. The original battery box has been modified to hours the Titan disc brake controller and brake pump.
One can use about 50% or 300 amp hours of energy (3,600 watts). The 800 watt solar array should refill that in a day of sunshine.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic w/ twin beds, 50 amp service, 1000 watt solar system, Centramatics, Tuson TPMS, 12" disc brakes, 16" tires & wheels
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04-04-2014, 05:36 PM
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#9
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2 Rivet Member
2004 25' Safari
prattville
, Alabama
Join Date: Feb 2012
Posts: 23
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lithium ion batteries
The web site is lithiumion-batteries.com
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04-04-2014, 06:02 PM
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#10
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2 Rivet Member
2004 25' Safari
prattville
, Alabama
Join Date: Feb 2012
Posts: 23
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Correction
5000 cycles not the 1200 I first stated sorry. The up front cost is large but for
a fulltimer it would be cheaper in long run.
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