nokia n gage battery performance

Have just bought a new battery (generic) for old n gage.
The new battery seems to be no better than old worn out battery.
Battery takes about an hour to charge fully
Even on standby it needs charging every other day: other phones i've
had needed charging about once a week.
Any ideas?

"6876" <amartin@lycos.co.uk> wrote in message
news:1136471053.709923.49940@g49g2000cwa.googlegro ups.com...
> Have just bought a new battery (generic) for old n gage.
> The new battery seems to be no better than old worn out battery.
> Battery takes about an hour to charge fully
> Even on standby it needs charging every other day: other phones i've
> had needed charging about once a week.
> Any ideas?
>
My son has an n-gage. Battery life is about 2 days at most. That was even
when the device was new.