Hi,
The message below bounced back to me as I tried to include a pdf file. I
replaced the attachment with a google doc link andI’m resending the message.
Sorry if you get the message twice.
Paul
...
Hi,
This was my argument last year, but the costs for LFP is now less than Walmart
batteries! It depends on one needs. I agree that there are little to no
benefits for day sailing.
I went a little overboard and replaced 2 group 31s with 560AH which cost me
under $1k USD. I could have cut that in half for 280AH.
What’s the upside?
* occupies the same space & location used by the 2 group 31s
* weighs less (95 lbs vs 125 lbs)
* over 5 TIMES the original capacity
* no more watering batteries
* no more replacing batteries
* equivalent in capacity to over TEN (10) Walmart Deep Cycle batteries
I have attached a link to slides from a talk I gave last week at a local HAM
radio club which basically covers the LifePO4, solar, and power upgrade
process.
https://drive.google.com/file/d/1-6GIrXPr5SEE5HWvAzs6yEt3K4x7y-lF/view?usp=sharing
<https://drive.google.com/file/d/1-6GIrXPr5SEE5HWvAzs6yEt3K4x7y-lF/view?usp=sharing>
-
Paul E.
1981 C&C Landfall 38
S/V Johanna Rose
Fort Walton Beach, FL
http://svjohannarose.blogspot.com/ <http://svjohannarose.blogspot.com/>
> Begin forwarded message:
>
> From: Dreuge <[email protected]>
> Subject: Re: Stus-List Re: anyone gone lithium?
> Date: September 14, 2021 at 1:47:27 PM EDT
> To: "[email protected]" <[email protected]>
> Cc: "Della Barba, Joe" <[email protected]>, CHARLES SCHEAFFER
> <[email protected]>
>
> This was my argument last year, but the costs for LFP is now less than
> Walmart batteries! It depends on one needs. I agree that there are little
> to no benefits for day sailing.
>
> I went a little overboard and replaced 2 group 31s with 560AH which cost me
> under $1k USD. I could have cut that in half for 280AH.
>
> What’s the upside?
> * occupies the same space & location used by the 2 group 31s
> * weighs less (95 lbs vs 125 lbs)
> * over 5 TIMES the original capacity
> * no more watering batteries
> * no more replacing batteries
> * equivalent in capacity to over TEN (10) Walmart Deep Cycle batteries
>
> I have attached slides from a talk I gave last week at a local HAM radio club
> which basically covers the whole power upgrade process.
>
>
>
>
> -
> Paul E.
> 1981 C&C Landfall 38
> S/V Johanna Rose
> Fort Walton Beach, FL
>
> http://svjohannarose.blogspot.com/ <http://svjohannarose.blogspot.com/>
>
>> On Sep 14, 2021, at 12:16 PM, CHARLES SCHEAFFER via CnC-List
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> Agree with Randy. The cost of Lithium batteries and all the necessary
>> power/charging management devices, prohibits the purchase unless you plan to
>> keep the boat for twenty or thirty years. I would only do it for a newer,
>> bigger boat that can support enough Solar Panels to be off grid, like a big
>> cat. Otherwise, keep it simple.
>>
>> Several YouTube sailors have installed the system and I can find those links
>> if interested. Or google "Sailing Uma", "Ran Sailing", and/or "Sail Life"
>> along with "lithium batteries"
>>
>> Chuck S
>>> On 09/14/2021 11:52 AM Randal Stafford via CnC-List <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>>
>>> What’s the upside?
>>>
>>> I got seven years out of a pair of group 29s Everstarts from Walmart, just
>>> replaced for $90 each. And I just replaced the alternator on my A4, which
>>> lasted 49 years.
>>>
>>> But the way I use my boat doesn’t require having a state-of-the-art battery
>>> system.
>>>
>>> Cheers,
>>> Randy
>>>
>>>> On Sep 14, 2021, at 7:27 AM, Della Barba, Joe via CnC-List
>>>> <[email protected] <mailto:[email protected]>> wrote:
>>>>
>>>> My batteries are about shot and I am thinking of going to lithium
>>>> batteries. I have to say I thought I knew this stuff and it seems
>>>> massively confusing with a ton of directly contradictory information. One
>>>> big issue seems that if the BMS disconnects for any reason, that will do a
>>>> lot of damage to your alternator and perhaps other equipment too. Add to
>>>> that my regulator does not have a specific lithium setting, I would need
>>>> to get into the custom menus and try and make one.
>>>> What seems to be the best bet is just to connect the alternator to the
>>>> start battery and use a DC-DC charger to charge the lithium bank. Some of
>>>> them also take solar input, so that saves me buying a solar controller
>>>> with lithium settings, which is something else I don’t currently have.
>>>>
>>>> Joe
>>>> Coquina
>>>> Thanks to all of the subscribers that contributed to the list to help with
>>>> the costs involved. If you want to show your support to the list - use
>>>> PayPal to send contribution -- https://www.paypal.me/stumurray
>>>> <https://www.paypal.me/stumurray> Thanks - Stu
>>>
>>> Thanks to all of the subscribers that contributed to the list to help with
>>> the costs involved. If you want to show your support to the list - use
>>> PayPal to send contribution -- https://www.paypal.me/stumurray
>>> <https://www.paypal.me/stumurray> Thanks - Stu
>> Thanks to all of the subscribers that contributed to the list to help with
>> the costs involved. If you want to show your support to the list - use
>> PayPal to send contribution -- https://www.paypal.me/stumurray
>> <https://www.paypal.me/stumurray> Thanks - Stu
>
Thanks to all of the subscribers that contributed to the list to help with the
costs involved. If you want to show your support to the list - use PayPal to
send contribution -- https://www.paypal.me/stumurray Thanks - Stu
