Are xt90 connectors safe for over 100A?

[Andy87]

Battery building is discussed here a lot:

The battery builders club

Batteries are dangerous if not treated right. Nobody want to have a fire at home or lose a board due to a wrong battery design. This thread should be a summary of clean safe battery packs as well as a place where you can come and ask questions all about how best to build your own pack. Feel free to upload pictures in progress and ask our opinion about the layout, weld quality or what ever you not sure is right done or not. @moon if I remember right you had a punch of pictures from well made p…

I wouldn’t worry about using a xt90 in your case.
If you want some additional info on what they can handle I recommend watching this:

XT90 - Measured and tested