Hi Benny Fernando,
I know a company named Prime Products, Synthofine Industrial Estate, Goregaon (East) Mumbai.
This company has everything regarding rechargeable batteries. They even develop circuits as per your application, very nice and co-operative people. Off hand I do not have their contact details now, but will inform within a day or two. Send me a mail if you want their direct contact phone number.

bye,
Mr. Kiran V. Sutar.