LifePO4 video

[Itinerant1]

Here is a good new video (19:19) on LFP that should dispute some claims/ myths that get repeated on the internet from non user of LFP. With the CEO of Battleborn who seems like a straight shooter and not trying to push their product but explain lfp chemistry some.

https://youtu.be/ywn-vBjKblI

@ 9:27 talks about 10-90% use range.
@ 12:45 talks about float.

Plus a lot more info that some of use longer time users have seen or been using with in reason and not seeing no issues.

[mapguy]

MrWizard wrote:
Those cells are larger, than what many builders are using
Some use 'prismatic pouch' cells, but many use the much smaller cells
And the Chevy Volt uses those big rectangular plastic encased cells
Whose name escapes me at this moment

PRISMATIC CELL...

[MrWizard]

Those cells are larger, than what many builders are using
Some use 'prismatic pouch' cells, but many use the much smaller cells
And the Chevy Volt uses those big rectangular plastic encased cells
Whose name escapes me at this moment

[2oldman]

Yikes. Here's mine:

[Homeless_by_Cho]

pnichols wrote:

.....

Man Oh Man ... look at all those little batteries and all those inter-connections that have to be made, and stay made, year after year ... or else.

...
(In addition, there is a fairly "complex" BMS system required to take care of all those little cells!)

When an RV'er is out and about on the far side of beyond, reliability of the RV systems becomes ultra important ...

I believe that most production electric cars use this type of battery configuration (approximately 1.3 v multi cell batteries with a BMS) so this technology has been in common use for several years now.

LeRoy

[pnichols]

red31 wrote:
here he opens one up

https://www.youtube.com/watch?v=G5E30u-66VI

Man Oh Man ... look at all those little batteries and all those inter-connections that have to be made, and stay made, year after year ... or else.

There is a whole corner of science concerned with the reliability of complex systems - one type of which is a system with only simple inter-connects but a lot of them.

When or when are Group XX sized vehicle lithium batteries going to consist of something like maybe 5 or 6 or 7 individual large cells - so system complexity can be greatly reduced? (In addition, there is a fairly "complex" BMS system required to take care of all those little cells!)

When an RV'er is out and about on the far side of beyond, reliability of the RV systems becomes ultra important - whether it be exploring in the Western U.S. outback or over-landing in Siberia.

I'll think I'll wait until lithium RV batteries become both cheaper and much simpler inside.

[red31]

here he opens one up

https://www.youtube.com/watch?v=G5E30u-66VI

[Itinerant1]

We all have different needs or wants and certainly some don't mind hauling around lead with the must do charging profile daily or weekly to get the "longevity" from the batteries.
Our particular wants was (1) major weight savings, (2) not being a slave to the battery, (3) live/operate from solar for the majority of the time and not have to run to a power pole or use the generator for long extended periods of time. LFP checked those boxes for our wants.

I thought the video does a well job with simplified answers for easy understanding.
Start of video to 6:30, low temps
@6:30 high temp/ degradation
@8:30 cycling
@9:30 longevity/ charge profile
@11:30 balancing
@12:50 floating
@15:40 storage
@17:40 cold cranking (which in reality doesn't really apply to lfp) terminology.

What they touched on carries over to all of LiFePo4 basically which for some of us that have been using this chemistry for many years in a daily operating system know because we can see it in operation, but some of the new comers don't really understand it because they read somewhere bad information being parroted.

[2oldman]

naturist wrote:

rk911 wrote:
LFP? Battleborn??

A company named Battleborn Batteries makes lithium iron phosphate, aka LiFePO, batteries.

Obviously didn't click the video.

[PNW_Steve]

I must be stuck in the '90s 🙂

I still find that FLA is the most cost effective chemistry when you look at cost Vs capacity and longevity.

The various Li varieties are very interesting to the geek in me. I have seen some hobbyists coble together some slick BMS setups. I just don't have the time or interest in going down that road.

If you are severely limited on space or weight capacity then the higher energy density starts to become attractive.

I am fortunate there. My 24v - 430a/h FLA battery bank fits nicely and cost just a bit over $800 including shipping. I live in a pretty remote are so shipping can be a killer.

[MrWizard]

So 'plating' in lithium on the charge cycle, is similar to sulfate in lead acid created in the discharge cycle
And has similar effects on battery capacity and degradation
Except it occurs during excessive charging conditions
Like cold temperatures, where sulfate always occurs during lead discharge and must be Fully Recharged to remove

Interesting video, thank you

[rk911]

naturist wrote:

rk911 wrote:
LFP? Battleborn??

A company named Battleborn Batteries makes lithium iron phosphate, aka LiFePO, batteries.

tnks

[3_tons]

Thx, Some Great information for Li users!!

[naturist]

rk911 wrote:
LFP? Battleborn??

A company named Battleborn Batteries makes lithium iron phosphate, aka LiFePO, batteries.

[rk911]

LFP? Battleborn??