Not buying a shaver from Philips again..
Edit: see comments for clarifications.
I am probably late on this one, but god damn this is one nasty trick by Philips.
Context; I recently decided to upgrade my shaver, from a Philips One Blade to Philips an all-in-one-trimmer-7000. As you can see on the pictures below, they changed the charger for the adapter by maybe 1–2 millimetres, just so the old charger could not be used by the old charger. Now, this normally isn't a big deal, but with the new trimmer, the charger is USB-A only. Where's the previous one had the plug on it instead. To me this is mildly infuriating as I know need to get an extra adapter just to charge my shaver in the bathroom. They had the exact same design for the chargers, yet changed it just slightly so they wouldn't be able to be reused? Why... Philips... why?
Edit: many good points in the comments! I don't know how to manually check the voltage, but seems like folks figured it out in the comments too. Should have just been USB-C!
The old cable supplies 15V, which would fry your shaver that is expecting 5V
I think the real sin here is making the shaver dependent on stored charge instead of just letting it run immediately after being plugged in.
It's a common safety feature for wet & dry razors. It's so people don't take them into the shower or bath while it is plugged in.
Battery charged trimmer lets you shower and trim, which is pretty awesome.
I think commenter meant trimmer should be able to work druring charging
Ooooh, yeah. That's a characteristic that a lot of electronics have that really don't like.