Reviewed by 4 customers
Received as a kit battery, however has a noticeably shorter charge. Will work for short term but plan to buy a legitimate NP-FW50 as a spare.
Battery stopped holding a charge after 2 months of use. No longer under warranty. Looked up other user experiences and overwhelmingly the same. Only got this as part of a bundle.
Good second battery for my Nex 7. No problems, works great.
The battery will work in the A33, but like a lot of other batteries that are not made by Sony, it needs a shim between the battery and the battery cover to connect with the camera contacts. So far it seems to work fine, after I stuck a piece of electrical tape to the top end of the battery.