Riley -
Thanks for taking the time to write the post.
Will comment only on the following:
“ Also, in order to take full advantage of the perks of lithium you need to be
able to efficiently charge the system. This means a substantial solar array or
very high output alternator (often
Yes, thanks Paul for adding these nuances. One can only include so much of
the details and my disdain for "drop-in replacement" lithiums stems more
from my concern that many end-users will take this completely at face value
and make no other modification to their boat's electrical system to
Riley,
While I’m not an advocate for drop-in replacements, but your statements about
them cutting off ones VHF, depth, chartplotter, bilge pumps, radar, etc. is
plainly false. The BMS in these drop-ins use separate charging and
discharging power MOSFET, so yes the built in BMS can stop an
Wow – this post is one example of why this list is the best!
What I have come down to is this:
New 4D gel - $650
200 AH Lithium – About the same for just the cells.
What will add up is all the extra stuff and rewiring I would need to do the job
correctly.
It will probably come down to my
I have saved this info as well - till the prices come down! – I can see I’m
not ready for this yet!
8D replacement, $3900.
Bill Coleman
Entrada, Erie, PA
From: Richard Bush via CnC-List [mailto:cnc-list@cnc-list.com]
Sent: Wednesday, September 15, 2021 3:12 PM
To:
Riley, Ditto what David Risch said; Thank you; your explanation is the first
thing I have read about lithium batteries that I understand and that makes
sense! thanks again!
Richard
s/v Bushmark4: 1985 C 37 CB; Ohio River, Mile 584;
Richard N. Bush Law Offices
2950 Breckenridge Lane, Suite
Riley,
This was great worthy of printing and saving. Thank you!
From: Riley Anderson via CnC-List
Sent: Wednesday, September 15, 2021 11:39 AM
To: Stus-List
Cc: Della Barba, Joe ; Riley Anderson
Subject: Stus-List Re: anyone gone lithium?
Hi Joe and any others interested in this topic.
I
Forgot to mention – the Deka gel in the same size costs a lot more. The TCO is
probably about the same.
From: Joe Della Barba via CnC-List
Sent: Wednesday, September 15, 2021 1:00 PM
To: 'Stus-List'
Cc: j...@dellabarba.com
Subject: [EXTERNAL] Stus-List Now Gel Batteries
Those, like about 98%
Following this thread with popcorn. I have a battery purchase in my near
future. Took my first cruise beyond a weekend and discovered while
troubleshooting why the engine wouldn't start that all my batteries are
start batteries. They were installed last year prior to my purchase.
Optima 34M
Those, like about 98% of what you find searching for gel batteries, are really
AGMs of a sort. The charge voltages are WAY off from what a gel uses.
There are 1001 different versions of Chinese batteries to be found for much
less than Deka gels and I really have no idea how good any of them
Thanks, Joe. I was looking at something like this for my two house batteries.
Amazon.com: Mighty Max Battery 12V 100AH Gel Battery Replaces Solar Wind Deep
Cycle VRLA 12V 24V 48V Brand Product : Health
Yes – that is what I have now.
Gels are good batteries, but VERY hard to find. If you ask for them, most
battery shops will give you an AGM battery. Gels have close to twice the
lifespan of most AGMs.
They never need water and can be mounted without a case. They do require a
unique charge
While on the battery discussion, I have lead acid batteries, which have served
me fairly well in light of how I use my boat. However, I was thinking about
going to gel batteries, primarily because deep cycle gels can provide a lot of
a/h for the house. Does anyone have experience with gel
Hi Joe and any others interested in this topic.
I install lithium batteries as my side job and after installing lithium on
our 38-ii and other large boats and consulting on another half dozen boats,
I can speak with some authority on this topic.
*The risk of serious electrical or fire damage can
My 50 amp Motorola that came with my engine has probably been back to the
shop for diode replacement at least twice and still works, I keep it as a
spare.
Since you are sticking with flooded lead-acid, you can get by with various
10si clones or another Motorola. There are usually a few A4
I replaced my batteries with no maintenance Optima deep cycle 100 ah batteries.
You can mount them upside down if needed. About $300 each. I keep my boat in
MX on the hard in the summer. The lead acid GC 6v batts would fail after one
season from loss of liquid and heat. No worries with
I'm staying with lead-acid batteries. As Dave points out, it may not be
worth the cost to upgrade, I may just have my existing alternator rebuilt.
Thanks for the info.
Neil Gallagher
Weatherly, 35-1
Glen Cove, NY
On 9/15/2021 6:29 AM, j...@dellabarba.com wrote:
Note you will need one of
Joe,
I already suggested this to another lister, purchase 4 small 6AH LiFePO4 cells
and a decent BMS. Connect the cells in a 4S configuration along with the BMS
wires. It is a great way understand the BMS operations and run through many
charge/discharge tests.
I did this recently with 4
Listers, I just heard Rod Collins, aka Maine Sail, aka Compass Marine, aka
HowToMarine, had a hemorrhagic stroke last week. He has survived the stroke, is
out of ICU and headed to Rehab. Apparently he is already on the mend and
joking around with nurses but, he's got quite a battle in his
I was not originally going to try and build a battery from individual cells,
but now I think I might. I can get a better BMS than most of the assembled
batteries seem to come with and if the BMS dies, I can replace it for $50 vs.
throwing out a $700 battery.
Joe Della Barba
Coquina C 35 MK
Neil, I went down this rabbit hole awhile back. There’s some useful info on the marinehowto site, a couple of alternator-specific articles and a section in the article below covering “do I really need a high performance alternator”. Rod, who runs the site is knowledgeable and thorough.
Note you will need one of these to fit a Balmar, 10si clone, or other
alternator that isn’t a stock Motorola onto an A4:
https://moyermarine.com/product/alternator-support-arm-late-model-ovel_03_222/
Balmar does make alternators that fit, but be prepared to spend $ if you
buy one new.
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