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Aurelia
Joined: 21 Aug 2009 Posts: 2331 City/Region: Gig Harbor
State or Province: WA
Photos: Aurelia
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Posted: Mon Apr 08, 2019 6:19 pm Post subject: |
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Great info and I love this stuff...
The Sterling Battery to Battery chargers mentioned by Bob are a solid solution and I have installed them in two boats with the second still running strong after 5 years of salty use in an damp location. They are great for mixing chemistries and also voltages if you have a need for a 24 or 36 bank in addition to your 12v gear.
Great products and I used the procharge 12 to 12v and 12 to 24v versions.
https://www.sterling-power-usa.com/ip68batterytobatterycharger.aspx
This company also has some options for getting fancy with batteries and there is some support for Lithium-IRON-PHOSPHATE
https://www.yandina.com/index.htm
Greg _________________ Greg, Cindie & Aven
Gig Harbor
Aurelia - 25 Cruiser sold 2012
Ari - 19 Cruiser sold 2023
currently exploring with "Lia", 17 ft Bullfrog Supersport Pilothouse |
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thataway
Joined: 02 Nov 2003 Posts: 20861 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Mon Apr 08, 2019 6:53 pm Post subject: |
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journey on wrote: | Bob,
I'm curious. You installed 200 a-hr of LiFePO4 batteries for the house and a group 24 interstate FLA battery for starting. Since there are a number of Li battery packs which will start an engine (see lithium starting batteries) why did you decide to use the FLA battery?
You have an 150 Honda outboard which has a small starter; so if Li batteries will start a truck, that Honda should be small potatoes. If you used the Li batteries, there is a lot of hardware of which you could get rid.
Boris |
Hi Boris,
What I may have hidden away, is that the boat came with an interstate group 24 starting battery and two interstate group 27 batteries which were relatively new and in excellent condition.
Second, Battle Born has advised that their LiFePO4 batteries are not designed for starting loads. Now, it may be possible that the Honda will start easily from the Li battery bank...But it may also damage the $950 battery if inadvertently it is cranked too long a time. I have one of the "quick start" battery packs, and it would start a 350 hp diesel 8.3 L engine--so no question that a li ion battery will start larger engines. But these small packs are designed for a quick discharge of CCA of over 1000 amps.
Even after the house batteries give out (which I suspect may be a long time), I'll probably still go with a FLA or AGM start battery, and the Sterling Battery to battery charger. The reason is that the B to B charger has the proper profile and a temperature sensor for the LiFePO4 battery. Can you charge a li ion battery right off the outboard? Certainly. But, the outboard battery charging circuits are relatively dumb. They can continue to crank out 14.5 volts way beyond when the battery is at a full SOC, and damage the Li ion battery. So I don't see where I would have eliminated any hardware. I wanted the PSW inverter, I wanted a large and rapid battery charger, designed for LI ion batteries, and I would have needed the switches, cables and connectors.
Where I have heard of Ii ion batteries being a great mix for outboards, is with the bass tournament fisherman. They have large demands on the trolling motors. But most of these guys seem to be sticking with the Lead Acid starting batteries. _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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PaulNBriannaLynn
Joined: 26 Oct 2012 Posts: 757 City/Region: Fort White
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 22 Cruiser
Vessel Name: TBD
Photos: Lorelei
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Posted: Tue Apr 09, 2019 3:52 pm Post subject: |
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Just yesterday I replaced the battery on my old Harley FXR motorcycle, with a Shorai Lithium Iron starting battery. It has never cranked so hard when I tested the system, and I've gone through 3 lead acid batteries on this bike.
I also replaced the lead acid battery on a notoriously hard starting racing motorcycle I have around 5 years ago with the same brand lithium iron battery. I'm seriously impressed by how much cranking power it had then, and still does this many years later. That bike sits in a hot shed most of the year and does not live on a battery tender. It holds the charge for what seems like indefinitely and can crank for a long time. It also charges back up from the alternator faster then the lead acid batteries.
It would be a much bigger investment on a boat like a c-dory, but it is the future in my opinion. I don't have the knowledge of some others, but would love to follow along if someone makes the switch. The cost will have to come down before I would be the guinea pig. _________________ 2007 22 cruiser sold 10/2021
2009 Parker 23 sold 10/2017
2003 22 cruiser sold 3/2016 |
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thataway
Joined: 02 Nov 2003 Posts: 20861 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Tue Apr 09, 2019 9:39 pm Post subject: |
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Currently Suzuki web site states:
Quote: | Avoid using deep cycle battery, maintenance-free battery, lithium battery or gel cell battery. | .
I know that in the past (and maybe now) Yamaha and Mercury also had the same instructions. It may not just be the CCA (or MCA) but also the load on the charging circuit??? (as several posters on other forums have suggested.)
Obviously many of us have used AGM and maintenance free batteries with zero difficulty. |
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hardee
Joined: 30 Oct 2006 Posts: 12633 City/Region: Sequim
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Sleepy-C
Photos: SleepyC
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Posted: Wed Apr 10, 2019 11:57 am Post subject: |
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Down the road a(long ways) might be an electric trolling motor for a tender, and the Lithium something sounds like a very good way to go.
Might mean I need to carry a small generator on board though, or an alternative.
Harvey
SleepyC
_________________ Though in our sleep we are not conscious of our activity or surroundings, we should not, in our wakefulness, be unconscious of our sleep. |
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thataway
Joined: 02 Nov 2003 Posts: 20861 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Wed Apr 10, 2019 1:33 pm Post subject: |
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hardee wrote: | Down the road a(long ways) might be an electric trolling motor for a tender, and the Lithium something sounds like a very good way to go.
Might mean I need to carry a small generator on board though, or an alternative.
Harvey
SleepyC
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The Torqeedo outboard covers those bases. It is light, has a lithium battery--no need for a separate battery or trolling motor. The Torqeedo charges from a 12 volt house battery system. A simple cord is all that is necessary. We have had our Torqeedo for over 7 years--works great--starts on the first turn of the handle! |
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