I'm also getting around ten also out of my DualSense controllers, default haptic/mic/volume settings. And just like the PS4 warning you the DualShock was low on battery, I'm still getting an hour more before the battery finally goes.
I get about the same; but I think a little careful conditioning will extend that by a few hours more. I like that they stop charging once full unlike the DS4.
Is this right? I'm sure I've had PS4 disc games update on my PS5 without having the disc installed.
It's what I have encountered so far. I put the disc in, wait for all of that to be copied and then, when it's just the update to go, I out another disc in to start the process again and the update download pauses until the disc is re-inserted. It was really annoying as I was hoping to stack installs to save some time.