[Elecraft] Li-ion vs. LiFePO4 was Re: K2 alive again, yay!

[Robert G Strickland]

That list looks to be pretty much in favor of LiFePo4. Highest energy 
density is only one factor; overall practical use I would judge to be 
more important, and safe.

...robert KE2WY

On 21 Jul 2021 18:31, Louandzip via Elecraft wrote:
>   Certainly there are pros and cons.  Here a list of some of them.  Everybody will weight these differently in deciding what to use.
>
>     - Highest energy density: lithium-ion
>     - Good energy density and lifecycle: lithium iron phosphate
>     - Stable chemical and thermal chemistry: lithium iron phosphate
>     - No thermal runaway and safe when fully charged: lithium iron phosphate
>     - Portability and lightweight characteristics: lithium-ion
>     - Long life: lithium iron phosphate and lithium-ion
>     - Low costs: lithium iron phosphate
> .
> Lou W7HV
>
>      On Wednesday, July 21, 2021, 11:41:35 AM MDT, Rajiv Dewan <rmdewan at gmail.com> wrote:
>
>   Another advantage: 2 to 4 times as many charge-discharge cycles.
>
> Raj N2RD
>
> — Sent from my mobile
> Rajiv Dewan
> rmdewan at gmail.com
>
>> On Jul 21, 2021, at 12:46 PM, Bill Frantz <frantz at pwpconsult.com> wrote:
>>
>> LiFePO4 has several other advantages, besides not swelling during charge. (Swelling is what caused fires in early devices in places like airplanes. They contained the battery with no room for expansion resulting in burst cases and exposed lithium.) The other ones that come to my mind are:
>>
>> Cold weather performance. (My winter FD LiFePO4 was reliable at -15C (5F), unlike my Li-ion laptop.)
>>
>> Low self-discharge.
>>
>> Voltage compatibility with "12V" systems.
>>
>> There are probably others.
>>
>> 73 Bill AE6JV
>>
>>> On 7/21/21 at 9:31 AM, elecraft at mailman.qth.net (Louandzip via Elecraft) wrote:
>>>
>>> Agree, but the consequences of mismanagement can be more, uh, consequential.  If not for their easier management and fewer hazards, what's the point of much lower energy density LiFePO4 batteries?
>> -----------------------------------------------------------------------
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-- 
Robert G Strickland, PhD ABPH - KE2WY
rcrgs at verizon.net.usa
Syracuse, New York, USA