Temgot 300 Ah Self heating?

[ThrottleAbuse]

I saw a few threads about the 100 Ah batteries and was wondering if anyone had experience with the 300 Ah. I saw a tear down of the 100 Temgot and Varter by Lithium Solar and his only issue was the solid bus bars.

I would like to get 2 of the self heating for use in a RV. The price point on the Temgot is nice at less than $800 for the 300 Ah. Anything else I should look at in a similar price range? I think self heating is a necessity so it does limit my options.