[phn]

I might be wrong but these shavers are generally "water proof", to be used in the shower and whatnot.

Turning off when charging sounds like a way to prevent someone to follow through with the shockingly brilliant idea of doing that while plugged in to the wall socket.

[pja]

I think this is probably it. Life + death safety is going to trump usability every time.

Meanwhile the Apple Mouse thing was (I presume) Johnny Ive & his obsessions getting in the way of real world usability. I don’t think anyone is going to die if they use an Apple mouse whilst it’s plugged into a usb port!

[willis936]

I don't think anyone's going to do any damage by shorting a 12 V DC supply.

[jwalton]

My Philips shaver has a 120v cord that goes from the wall to the shaver, and it won’t operate while plugged in.

[camillomiller]

Tell that to the lawyers that will be happy to sue Braun to find out.

[enriquto]

Problem is that it's almost impossible to buy a (non-waterproof) rechargeable shaver that also works when plugged. In my typical usage case, shaving less than once per month, I have to wait a few hours every single time I want to use it!

[b112]

This seems weird. I've had braun and wahls, and each lasts months on one charge, I use(d) them weekly for bread trims.

Sounds like your specific one has a defective battery. Or design.

[RicoElectrico]

Philips Multigroom 77xx have quick charge :) They claim 1 shave after 5 minute of charging. I am inclined to believe this based on experience.

Though, it's a not a direct replacement of Braun Series 7 mentioned in TFA - it's mainly a trimmer.

[planb]

This starts to get really off topic, but I have the same use case. I don't know why, but at least here in Europe most shavers come with NiMH batteries, which seem to suffer from self discharging. Since I got one with a lithium ion battery, I can charge it twice a year and it is always ready to go when I need it.

[numpad0]

The word for it is "mains shaver", though product searches might try to sell you rechargeables regardless.

[enriquto]

But I want it to be rechargeable, just like a phone or a laptop. Usable either plugged or (when it has somme battery) unplugged.

[dtech]

Does your battery drain that quickly when not in use? I have a Braun 7 myself and often take it with me when travelling, and it easily does 6 shaves on a full battery, probably can do 10+.

[enriquto]

I have an older Braun, and it may last three or four of my shaves. This means that it lasts too much to bother charging every time, but it drains too often to become a nuisance. If it only could work while plugged it would be perfect.

[mellavora]

If you are only shaving 1x/month, buy yourself a straight razor.

Heck, buy one even if you shave more often.

You don't have to shave down to the skin, you can use it to trim a beard. I've been doing this for years.

[danbmil99]

Doesn't explain apple's Mouse

[necovek]

The story is not really about Apple Mouse, it's mostly mentioned tongue-in-cheek about comparable design traits and the backstory of how Apple design was influenced by Braun.