Low temperature LI battery

Itinerant1 wrote:
And yet folks and possibly even posters to this thread plug in laptops, phones, tablets and any other device that has some sort of lithium chemistry that is even more unstable than lfp in their homes, vehicles, rvs and not think twice to walk away while it charges.

Uuuuuuhhh ... but aren't those LITTLE TINY, low-cell-count, or single cell lithium batteries ... with little tiny electronic circuits charging them ... with consequently only little tiny fires that might result from failure of those little tiny electronic circuits to not properly treat the lithium chemistry?

Take a look inside this typical large RV lithium battery - notice all the cells with all those interconects between all those cells - and that good sized circuit board at the top that's probably loaded with intergrated circuits, capacitors, resistors, voltage regulators, temperature sensors, etc., etc.. You want to trust all this stuff to never go hay-wire inside an area where you're sleeping, or where you're pet is sleeping while you're gone? Not me:
https://www.lithiumion-batteries.com/uploads/files/15019/12V%20100AH%20Internal%20Design%20PDF.pdf

(I won't own an electric car quite yet, either, for the same reason. ;) )

Itinerant1 wrote:
And yet folks and possibly even posters to this thread plug in laptops, phones, tablets and any other device that has some sort of lithium chemistry that is even more unstable than lfp in their homes, vehicles, rvs and not think twice to walk away while it charges.

Ding Ding Ding......we have a winner!

I believe the vastly faster charge rate possible with LiFePo more than makes up for some seasonal heating needs.

And yet folks and possibly even posters to this thread plug in laptops, phones, tablets and any other device that has some sort of lithium chemistry that is even more unstable than lfp in their homes, vehicles, rvs and not think twice to walk away while it charges.

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.

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. :)

GordonThree,

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

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?

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.

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.