[C320-list] New Battery Chemistry
John Beck
jbeck50 at gmail.com
Wed Feb 22 07:09:33 PST 2023
There is only one lithium start battery available that I know of!
Just add a separate start battery and dc to dc charger that’s what I did on
#518 plus solar is a nice add in!
On Wed, Feb 22, 2023 at 9:52 AM Christopher Nichols via C320-list <
c320-list at lists.catalina320.com> wrote:
> I think one of the other big challenges is in the interaction between
> battery BMS and your alternator. The sudden disconnection of a fully
> charged battery from the alternator can create huge spikes that fry
> alternator diode packs.
> I know there are smart gubbins to prevent this problem but I have low
> confidence of anything that is so highly stressed lasting a long time
> in a marine environment.
> I for one will favour keeping at least one FLA cell in the system to
> absorb spikes.
> Chris
>
> On 22 Feb 2023 03:49, Bruce Heyman via C320-list
> <c320-list at lists.catalina320.com> wrote:
>
> Hi Jack,
> Really good points but I believe the marine(ized) LiFePo4 batteries
> have built in battery management systems that are very reliable for
> preventing the catastrophic failures. I know of USCG Inspected
> Passenger Vessels that are now using them. There is a couple of fun
> to watch (for me anyway) videos of the Tally Ho reconstruction
> project up in Port Townsend that discuss the new batteries. For me
> the lifecycle improvements and my age would suggest that these may
> be the last batteries I would ever have to install in our 320.
> There is a very good chance that the Dive Boat Conception fire was
> the result of Lithium Ion Batteries failing during recharge as you
> are right they are in everything now. On our tall ships we now
> insist that anyone charging their cell phone have to do in in one of
> the fiberglass fire retardant bags that we keep in the nav.
> Best,
> Bruce
> Bruce Heyman
> Somerset #671 San Pedro (LA) California
> -----Original Message-----
> From: C320-list <c320-list-bounces at lists.catalina320.com> On Behalf
> Of Jack Brennan via C320-list
> Sent: Tuesday, February 21, 2023 6:23 AM
> To: C320-List at Catalina320.com
> Cc: Jack Brennan <jackbrennan333 at outlook.com>
> Subject: Re: [C320-list] New Battery Chemistry
> What is the situation with insurance?
> Cruisers Forum and similar sites are full of declarations that
> insurance companies will not cover a claim unless the batteries and
> charging system are professionally installed.
> I would love to install lithium, but it seems a bit risky.
> Manufacturers with limited track records, conflicting claims on
> safety, etc.
> On the other hand, most of us already have lithium on board in
> phones, tablets, power drills, handheld radios and more.
> Jack Brennan
> Sonas, 1998 Catalina 320
> Tierra Verde, Fl.
> Sent via the Samsung Galaxy A32 5G, an AT&T 5G smartphone
> -------- Original message --------
> From: John Beck via C320-list <c320-list at lists.catalina320.com>
> Date: 2/20/23 9:50 PM (GMT-05:00)
> To: C320-List at catalina320.com
> Cc: John Beck <jbeck50 at gmail.com>
> Subject: Re: [C320-list] New Battery Chemistry
> Love it, would do again!!
> On Mon, Feb 20, 2023 at 9:39 PM Jerry via C320-list <
> c320-list at lists.catalina320.com> wrote:
> > Did it last year a little different than most people. I have two
> > xantrex chargers in parallel. One is 40 amps and one is 20 amps.
> They
> > do not have a lithium setting. I installed 2 200ah Renogy blue
> tooth
> > batteries that connect to my iPhone. I use the AGM setting most of
> the
> > time. But I increased the amp output to 13.9 V by selecting the
> cold
> > setting on temperature control on the charger. This gets the
> batteries
> > up to 98% which lithium prefer. When I am off the boat I shut off
> most
> > of the load and turn off the charger. Once in a great while I need
> to
> > top balance the battery cells then I switch the charger to GEL
> > settings which increases the float charge to 14.5V for a few
> hours.
> > When the cells are balanced I switch back to AGM settings which
> > returns the charger back to13.9V float. That keeps the battery
> happy.
> > To protect the alternator from over heating I installed a 40amp
> dc-dc charger to run from the AGM start battery to the lifpo4
> > battery That works for me very well I have enough power to run
> off grid
> > with refrigerator and stereo and instruments for 3-4days without
> > returning to the dock. I am on a Missouri lake so I don’t need
> solar.
> > Cat 320 #500 1998.
> > Midnight Rider.
> >
> > Sent from my iPhone
> >
> > > On Feb 20, 2023, at 19:19, Bruce Heyman via C320-list <
> > c320-list at lists.catalina320.com> wrote:
> > >
> > > Hi John,
> > > Excellent! Would you do it again? Any issues or challenges?
> Seems
> > like it should provide a lot more AMP Hours!
> > > Very best,
> > > Bruce
> > >
> > > -----Original Message-----
> > > From: C320-list <c320-list-bounces at lists.catalina320.com> On
> Behalf
> > > Of
> > John Beck via C320-list
> > > Sent: Monday, February 20, 2023 5:09 PM
> > > To: C320-List at catalina320.com
> > > Cc: John Beck <jbeck50 at gmail.com>
> > > Subject: Re: [C320-list] New Battery Chemistry
> > >
> > > Did it 2 years ago with solar and added a start battery!
> > >
> > >> On Mon, Feb 20, 2023 at 8:02 PM Bruce Heyman via C320-list <
> > c320-list at lists.catalina320.com> wrote:
> > >>
> > >> Has anyone ventured into switching to LiFePO4 batteries? Seems
> the
> > >> technology has really advanced.
> > >> Thanks,
> > >> Bruce
> > >>
> > >> Bruce Heyman
> > >> Somerset #671 San Pedro (LA) California
> > >>
> > >>
> > >>
> > >> --
> > > Jb
> > >
> >
> > --
> Jb
>
--
Jb
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