Just received my replacement 11s after the first one refused to charge. This one started to “breathe” orange on its first charge, then after a while the light turned solid red (no tone). After a few hours I pushed the “auto” button on the remote and it came off the base, moving around and cleaning normally (blue light). Eventually it got stuck on a cord, so I placed it back on the base and pushed the “stop” button on the remote (it was late and I was going to bed). Now it is glowing red again. No idea whether it’s charging or not.
I’m about to just return it for a refund. The customer service has been great but reboxing/shipping back is a hassle and two bad units in a row doesn’t make me feel good about my long-term prospects.