Needs banana for scale. I bought six of the 11Ah foil pouches. And I thought five of them would be good for a 12V pack. The seller I got them from insisted they worked better as 6S, so I will try that. It's an odd voltage. 2.4V nominal, but...if you look at the discharge curve graphs, the useful range seems to be 2.2V to 2.6V.
They can be charged up to 2.8V, and the listed LVC is 1.7V, however, one of the interesting features is that "supposedly" they can be discharged to zero, without suffering any harm.
Very high C-rate when charging and discharging.
Can operate in unusually cold weather much better than the more common chemistries.
Very high cycle life, 7,000 cycles seems to be a common spec...
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One of the uses is as a feeder for a 12V capacitor bank, being used to start a car. There are many videos of supercapacitors (five 3.0V, or six 2.7V) that easily start a car in extremely cold weather (where lead acid, and even lithium will struggle with voltage sag).
Also, the capacitors are not hurt by very hot weather (lead-acid batteries in Phoenix in the summer). A properly-specced supercap bank can be charged directly by the cars alternator system.
Capacitors should last the life of the vehicle, but...their one huge flaw is that they slowly drain down over time.
There are two strategies to fix that. One way is to use huge supercapacitors that will last a couple weeks before draining, or...use a small supercapacitor bank that is coupled with a hand-sized 12V battery. ($60-ish for the caps, Google 3.0V Amperics)
https://www.amperics.com/product/am12v250a/
Charge the capacitor bank through a 1/2 ohm resistor, then start the car with the supercaps. Since LTO chemistry performs well in the cold, it could still be kept in the car. It's long term life-cycle is a great match for supercaps.
Once you are driving, recharge the LTO pack from the 12V utility socket. The small 12V pack can also be a sweet portable phone or laptop auxiliary battery bank.
