New battery cases?

Have anybody seen this battery case? I could not find any information about it:

https://www.alibaba.com/product-detail/electric-bike-battery-36v-11-6ah_60608127936.html?spm=a2700.7724857.main07.167.6513c713QnVHCM

It looks very similar to this one from Luna Cycles:

https://lunacycle.com/flx48vbattery/

but not exactly the same I think....

Does anybody know where to buy these? I find this form perfect for up 13s3p

Thanks!

It's a Reention Thunder DT-1. You sometimes see them on Aliexpress, but only if you're lucky enough to enter the right search string.

http://www.reention.com/product/detail/45