User HanaLF pm replied my message to them to request what the ruling was regarding warranty and acl coverage on Viomi s9 and its battery on my less than 2 year old (and very sparingly used) viomi s9 uv. They replied that they now have authentic battery in stock and offered a code to take $50 off the list price.
Apparently Viomi battery issue problem is very common - I emailed Panmi service and lodged a case but got no reply.
Hope this post helps others with same battery issue as I’m sure there is a decent amount of ozbargain members with this robot vaccum.
Lastly, Checkout process is not very intuitive, have to hit the black checkout button then you can add code.
@mods can thumbnail be updated please