already several months ago that I am using this battery. I have no complaints about its load holding capacity. I filmed with my Sony camera for more than 3 hours (with angle change for cuts) and I can assure you that she still had the juice! Believe me, it takes quite a concern for not having to manage the energy of a camera. Who has not known in full shooting of a play, the battery that falters? And it is or the secondary battery? And how I make connection with 2mn that will be lacking? It was the first reason for my great battery control. We can criticize the weakness of the envelope of the latter if left too long to load: it splits!. But the solution arrived I put my decision in itself a timer connected and I program my charge time. This is perfect and it works for the energy savings !! And the price is great !!