After a few weeks of use, I can say that the battery is much better than I bought just before and that I had to get a refund because of a counterfeit Nokia (for which the guarantee has great Amazon worked elsewhere). Thereof is gradual in the discharge and does not lose 3 bar in 20 minutes. It is roughly equivalent to the original but nothing exceptional either. The only flaw is the film about black plastic, it is a little thicker than the original and I had to force a little to close the cover but nothing embarrassing well. Nice, a small micro fiber pad comes with the order.
