There is a guy on YouTube that does videos on lithium batteries.
He will rip the battery apart and see how well it’s built and wether or not the battery has what the battery company advertises.
From watching a number of his videos. Some things I have taken away.
The cells come from China. However how the battery is assembled means more than anything and they can be assembled here in the US.
There are some cheap batteries out there that are assembled good. There are some high priced batteries that are not.
One of the better batteries I have seen him do a review on is Battle born. They were also the most expensive and assembled the best.
Anyone that charges in temps below freezing will want a battery with a cold temp sensor.
Some battery companies advertise they have one but they actually don’t.