Tesla Lithium battery question.

[travellerw]

Originally Posted by DeepFrz

I was just wondering. I saw a guy installing them in his RV and wondered if anyone on CF was doing it.

There is a fairly large group on Facebook that has a lenghty discussion of this. Yes there is at least one person there that is in the process of installing on a boat.

[Baba Buoy]

Many such batteries may be available from wrecked e cars. Seems like an opportunity to adapt one to a boat.

All batteries pose potential fire hazards so curb that argument at the door.

[newhaul]

Originally Posted by Baba Buoy

Many such batteries may be available from wrecked e cars. Seems like an opportunity to adapt one to a boat.

All batteries pose potential fire hazards so curb that argument at the door.

if you place base Lipo batteries on your boat let me know where you are moored.
As go thermal runaway yes all batteries have that potential however when was the last time you heard of any fires that were not from Lipo ?
I don't care if you want to experiment then have fun also please do a thread on it would be interested on how it works out.

[a64pilot]

Prius packs just due to how many there are were the least expensive and most available.
The Nimh packs are safer

I briefly considered it, but again, why? what do you gain?

Many things are possible, just don't make sense compared to what is already in use, like wind turbine driven boats. You can do it, it will work, but why?

[svGenesis]

I think this guy said he is an electrical engineer? but he used tw0 different battery set-ups, here is his video of the second one. (1440Ah)

https://www.youtube.com/watch?v=9GoSDOM-jVI&t=25s

[john61ct]

Originally Posted by travellerw

Just to clarify.. Sailing Uma did not install Lithium Ion batteries.. They installed LiFePO4. They installed BB10012 Battle Born 100Ah LiFePO4 batteries.

Lithium Ion are an umbrella term, which includes LFP as well as dozens of other, very different specific chemistries.

[travellerw]

Originally Posted by john61ct

Lithium Ion are an umbrella term, which includes LFP as well as dozens of other, very different specific chemistries.

In a post about Tesla batteries, I disagree that Lithium Ion is an umbrella term. Also if you actually read that persons post he indicated that the batteries Sailing Uma used were "like" the Tesla batteries. They are not in any way!

[a64pilot]

Used to be that Lithium- Ion meant Li-Po batteries in a can, Li-Po were really the same battery, just in a polymer bag.
Can provides some level of protection, ease of installation and takes space and is heavier.
I don't know if the naming convention is the same, but I suspect it is

The Tesla like I keep saying is simply a whole lot of Panasonic 18650 cells, with is a Li-Ion battery.

[a64pilot]

https://evannex.com/blogs/news/under...-ion-batteries

[john61ct]

The new model uses a completely different formulation.

NCA?

NMC for the powerwalls

https://cleantechnica.com/2018/03/04...ry-technology/

All are lithium ion, as is LFP.

Only prismatic LFP are suitable for mobile House bank usage.

[a64pilot]

The new ones differ in size I believe.
I wouldn’t say a D Cell battery is completely different from a C just cause it’s bigger.

[john61ct]

No, different chemistry, nothing in common between them other than both fall under "lithium" category, even though very little of that actual element anymore.

And neither is LFP.

[a64pilot]

I know, the are Li-ion or Li-Po
I think due weight and energy density all the electric cars are?
Toyota used to use Ni-mh for the Prius as I'm sure they were leery of Li-ion or Li-po.
Honda used a gazillion of I think C cell Ni-mh in their First hybrid.

Auto guys seem to think they have solved the safety issue of Li-po, I don't know why, no idea, but I think all "real" car manufacturers have gone to specially, custom made cells, Tesla is or was stuffing in thousands of flashlight batteries.
Some take offense to me calling them that, but it is, what it is.

[a64pilot]

I think, but am not sure but three are few if any real Li-ion batteries anymore, I believe they are all or almost all actually Li-po.
Li-ion had liquid electrolyte, like a flooded lead acid battery sort of?
Li-po electrolyte is a polymer, sort of like a Gel or AGM?

[DeepFrz]

Originally Posted by a64pilot

Used to be that Lithium- Ion meant Li-Po batteries in a can, Li-Po were really the same battery, just in a polymer bag.
Can provides some level of protection, ease of installation and takes space and is heavier.
I don't know if the naming convention is the same, but I suspect it is

The Tesla like I keep saying is simply a whole lot of Panasonic 18650 cells, with is a Li-Ion battery.

The chemistry that Tesla uses is Lithium, Cobalt, Manganese and Aluminum Oxide (I don't know the nomenclature for this). Apparently the aluminum oxide contributes to the battery's stability keeping it more stable than batteries of other chemistry makeup. They are not just common Panasonic cells. At least that is my understanding.