AIBU to think there is something wrong with Electric Toothbrushes instuctions

[DrDance]

Instructions are to charge initally for 16 hours, then charge 16 hours twice a week

So that's 32 hours on charge a week for 2x2mins use twice a day so thats 28 min use but on charge for 32 hours?

Can this be right? And if it is, surely that's completely uneconomical or am I missing something?

Mine gets charged once a fortnight, overnight. It's an OralB.

I have no idea what the instructions say for mine - It gets charged when it's flat, overnight.

I charge mine when I think of it ... it's never run out. By the way, apparently some people use their vibrating electric toothbrushes for purposes other than cleaning their teeth (one hopes without the brush attached). Not that I have any intimate knowlege of this ... just saying. Of course, one then would have to charge the thing more often, given its, ahem, dual purpose.

Same as YBR. Either when it's flat, or if I'm on the ball, when it gets slower it gets done overnight.