Toothbrush charger question

[Substance]

This is going to be an extremely exciting thread.

I have an Oral B electric toothbrush and it has a 2pin charger, I use this in the shaver socket in the bathroom and it works great in either the 230v or the 115v socket, The charger can accept voltages of between 90v and 240v so I understand that,

But will it charge faster/use more electricity using the 230v over the 115? Is there any advantage to using the higher voltage socket?

Not the most useful thread on the boards but it's something I was thinking of when brushing my teeth.

Thanks

 

[Phemo]

Shouldn't really make any difference. Devices at 115v use more current (amps) than those at 230v. My understanding is basic and probably flawed at best, but for example, if a 230v device needed 1 amp of current to operate, then the same device on 115v would need 2 amps. Overall it works out more or less the same. I'm sure people who know more than me will clarify and correct if appropriate though

 

[Adam_151]

The only thing I can think of that will be affected, is that often these shaver sockets are not designed for anything other than a shaver (toothbrush chargers draw for longer than it takes to shave your face...) and can run a bit hot when using them for toothbrushes, so sticking to the 230v tapping should cause it to run cooler than 115v because as Phemo says that to obtain a given wattage you need more current on a lower voltage... watts = amps x volts. Switch mode power supplies (almost certainly whats inside the toothbrush charger) are a non linear load and will adjust the current draw in order to maintain the required output.

 

[Uhtred]

brushing teeth is a good time to think about stuff, i discovered induction charging while using my oral b

 

[godsense]

I found my oral B charged a lot slower in the lower voltage slot. Also I dont like keeping it on the charger, charging 24/7, ruins the battery and wastes electic