It says in the manual to only use alkaline batteries, however I want to buy rechargeable batteries for it to limit the waste.

I can’t find anything in the UK that can charge alkaline batteries, so would it be ok to use another form of battery, like rechargeable Ni-Cd or something in a toothbrush that says only to use alkaline?

By the way it came with the 2 non-rechargeable alkaline batteries that are suitable which are 1.5V.
Any help would be greatly appreciated.

Gee u r stuck with antiquities in the UK all right get an oral-b toothbrush they work fine and include a built-incharger. U can get one for about 40$