Wharfedale home phone battery...?

Hi

I have a Wharfedale B239 home phone, with answering machine (single) and the rechareable batteries have charged their last charge!
I brought Enegizer recharables, and they dont work! nothing comes on the phone, so i tried normal AAA batteries from my TV remote and they work, so i took the phone and batteries to my local electrician and he told me he has no clue why the rechargeables wont work!
So i have had to buy a big pack of tesco AAA batteries, but i have to change them everyday as obviously the phone cannot go on the base and the phone is wiping the batteries!
Does anyone know what rechareable batteries will work in this phone? Or what batteries you have in your Wharfedale phone?
Or where you can get rechargeable batteries suitable for this phone?
The batteries it came with, are:
1.2V 650mAh
Any help will do!

Heres a link to a pic of the phone in question:
http://www.jellydeal.co.uk/prod_store/compare-prices-wharfedale-b239-ice-tam-single.jpg

Thanks

Same problem here.! But no solutions...!