I recently purchased a Sony RX100 vii and wanted plenty of spare batteries. I ended up buying two of these charger/battery sets.
The batteries are certainly comparable to the original Sony one. After a full discharge/charge cycle they work much better and I had to check it was the 3rd party and not Sony one, it was doing so well.
The charger is pretty quick and has a clear display of the charge status of each battery. Batteries fit the camera perfectly too, so at under £20 it's incredible value.
One note is that one of the chargers arrived with a USB-C port and lead, the other with micro-USB port and lead. I'm actually quite happy about this, as I've loads of USB-C leads to charge it from, but for some strange reason the Sony has a micro-USB charging port in the camera, so the other charger better suits that.