Lithiun Ion Battery Caution
I've had one serious lead-acid battery fire too.
But I think what is bothering me here is that the mfr/seller of the particular battery in question does not have any info on their site on precautions for these. I suspect that most folks would not know to not jump start them.... which the mfr said was the cause of the battery fire discussed in the linked thread. Honestly, how many of us know that?
I have a couple I use in my ATV's and they're great.
Since these batteries are supposed to be charged in a certain way (constant rate), do you know how your ATV's charging system manages that? Did the ATV's come with the LI battery originally?
If not, how is too high a charge rate avoided, and how does one prevent excessive discharge of the battery, which is also a cause of the batteries to fail? Not challenging you, but this is the type of application info that I don't think is understood, and putting a battery like this in a vehicle with a standard charging system meant for a lead-acid battery looks like a big problem.
