This year I purchased the RBXR extended battery Mod for the Onewheel XR: https://www.rangebatt.com/product-page/cjxr-onewheel-xr-extended-range-pack
This is a 15S3P pack which is compatible with the stock BMS on the XR.
RangeBatt came highly recommended in the UK scene, but when chatting to other riders about my purchase, one person mentioned some concerns about the build quality of one of their RangeBatt packs.
Having just purchased a brand new battery I decided to perform a partial teardown so that I could validate that the pack used genuine cells and had a high build quality.
My findings are documented in this video, including my full journey of looking at the RBXR and installing it into a TorqueBox.
Flowstate PEV
https://flowstatepev.com/thebillington
Onewheel Riders Collective UK
https://www.facebook.com/groups/1100231991134653
Onewheel Trailfinders UK
https://owtrailfinders.wordpress.com/
Nosedive Podcast
https://www.youtube.com/@TheNoseDivePodcast