The battery lasts longer than the originals, but felt only 1-2 min. (1500mAh) In any case, one should note that from 30%, the voltage drops very quickly, I land when the battery indicates 30% because from there it only takes a few seconds to the "bird" falls from the sky. On my demands towards me was only notified of the the Answer something can take, which was 2 days ago.
What I really like the way the battery is not nearly as warm as the originals, the protects the rest of the materials.
Absolutely a good alternative for being too costly battery replacements.