My primary source is 2 guys that repair cellphones. And the extra fake battery I bought for my N95 did this too. Anyways here's a review: Source: http://www.amazon.co.uk/Nokia-BL-5J-.../dp/B001O5ES0S Don't believe me if you don't want to. But the facts are there. And this has nothing to do with how much the battery lasts. I am very happy with that. The battery rarely dies on me, so I rarely use the fake one and keep it only as an extra. But the issue here is that the battery doesn't show the correct percentage. I told you why. Somehoe it is BS.. Buy a fake battery just for the kicks. I got mine for 6 euros. You will see what happens.