Recommendations for good WiFi speakers

Soundcore Motion X600. Heard these while dining in a restaurant in Portugal. I was quite impressed by the sound quality. Great for a background music sound system.

…either battery-powered or can be pre-charged

I doubt you’ll find any that carries a self contained battery.  Most would be required to be plugged into an outlet such as the KEF LS50. I heard the Cabasse Rialto at audio shows twice and many commented they’re underpriced for the great clear and surprisingly satisfying low end.

After hearing the Vanatoo Transparent One here at AXPONA, I was very surprised how great they sounded at such an inexpensive price- I purchased a pair.  

Budget? It depends what’s out there. It’s the secondary set, kinda, so I don’t want to spend too much. 

That’s not an answer.  I’m not wasting my time playing your guessing game.  Good luck.

No intentions to play guessing or waste anyone’s anything, soix.
Needed to get an idea what the range is, otherwise, well… I’m just guessing.
But fair enough - here it is: max $600/paiir.

Can we continue that conversation now that the budget of max $600/pair has been clarified? Any more recommendations for WiFi speakers?

In addition I’d like to hear from folks who had experiences with making powered speakers into WiFi speakers. Looks like that could be an option (as long as no soldering and such is required).