In theory it should work just fine. Just two problems with it.

A: Will it be rated capacity, or not? Nobody knows, hard to test subjectivly

B: It's not a nokia battery, there have been cases in the past where there was a lot of fuss about using a 3rd party battery in a nokia device, losing warrenty, broken devices and especially getting very hot or even burning.

My personal opinion is to just try it. See if it gives you better battery life then before doing your tasks and it if lasts longer, great! Share the experience!

I have a Canon Powershot S60 with a factory battery and a cheap alternative battery which is suposed to have about 350 mAh more. I think they lasted the same in the beginning and over the years the cheaper one has lasted less and less long while the factory one remained strong. But hey, it only costed 1/3rd too.