I have one. Ran it in the engine bay, wrapped in gold foil to avoid heat induced shutdown. I had no issues in that reguard with intake temps nearing 140F at one point. I haven't run it in the winter yet. The cold might be an issue. It'll discharge but won't take charge below 25F but it'll discharge (or so I'm told). It won't do either above 135F. I'd look into a heated battery blanket if you're considering using it in the winter.
https://battlebornbatteries.com/wp-content/uploads/2016/08/Battle-Born-Manual-2.pdf
That said, holds a charge very well, charges VERY fast, has built in thermal protection and charge protection. Twice the capacity for an AGM of the same size and nearly 1/3rd the weight. Significantly more charging cycles vs a regular AGM, so in the long run it'll be cheaper to use. It won't start a rig (from my experience) but for a house battery it's killer. I ran it with a Redarc 1225 but from what I understand that's not needed as it's a drop-in replacement for an AGM. I still wanted proper charging profiles and the 200 series I was using had that stupid variable voltage alternator which the Redarc unit compensates for. I plan to keep it and build a system around it for the Troopy. Perhaps even buy another if I end up doing long term traveling with it.
Apparently you can get Lithium batteries like these on Alibaba for 1/2 the price but it's a shady situation and you're probably getting garbage cells, no warranty, and a weird lookng battery arriving in a tattered box that smells like durian fruit. Or just pay the price and have a USA assembled Lithium with a warranty.