Low temperature LI battery

[pianotuna]

Finally an LI battery with a built in heater:

https://relionbattery.com/blog/lithium-battery-cold-weather

[time2roll]

Most likely you will not be charging a lithium overnight as you may with lead-acid. I would be charging lithium and disconnect if running the generator all night or on utility power. For most batteries the real danger is during the charge cycle.

[pnichols]

pianotuna wrote:
GordonThree,

It may be safe. But it is even safer if they are not in the living quarters.

Right you are Don!

Guess what it takes to control the electro-chemistry of those batteries ... electronics. Do electronics ever fail ... you bet ... Tesla technology notwithstanding.

I vote for lithiums being kept out of the living compartment and in a place with sheet steel between it and the living area - just like the lead acid AGM batteries are and the big gas tank is - in our rig. 🙂

[pianotuna]

GordonThree,

It may be safe. But it is even safer if they are not in the living quarters.

[GordonThree]

time2roll wrote:
Even with the hour delay the lithium will be charged faster than your flooded battery.
And of course you can always keep the lithium inside where it is warm and toasty.

x2 - why store the batteries outside where its near absolute zero?

[time2roll]

Even with the hour delay the lithium will be charged faster than your flooded battery.
And of course you can always keep the lithium inside where it is warm and toasty.

[pianotuna]

Gdetrailer,

Not only Tesla, but also Leaf.

Since I camp at -37 C (-34 F), it is a BIG DEAL.

The cost of running a generator for an extra hour is insignificant compared to failure of an LI jar.

Since they still think that -20 is cold, these batteries still don't meet my needs.

I thought it was interesting that "plating" is the problem. I thought that it was dendrites. I suppose one could compare LI plating to "hard sulphation" of lead acid plates.

[Gdetrailer]

Big deal, Tesla Motors HAS been doing this for years.

Additionally, totally stupid to have to use a considerable amount of electrical energy TO HEAT a LI battery just to be able to charge the battery in low temperature settings. No one is willing to give up exactly how much energy is used before, during and after charging just to keep the LI battery in the "safe zone" either..

Relion mentions possibility an hr of heating BEFORE charging starts, are you willing to run a generator for 1 additional hr? That is time that a standard lead acid battery would be charging and most likely an hr LESS of charging would be needed for a LA..

Face it, ALL batteries have advantages and disadvantages, if you are into extreme cold weather camping and don't wish to run a gen for an hr or more additional JUST TO HEAT THE BATTERY then LI technology is not for you..

[Lwiddis]

More good progress!

[Boon_Docker]

I wonder if the come with a pre-approved mortgage application. :B