Amazon.com: Wasabi Power Battery (2-Pack) and Charger for Sony NP-FW50: Camera & Photo
I purchased this battery pack for SONY NEX-5N (a new SONY camera that came out in September of 2011), which takes NP-FW50. SONY NEX-5N uses batteries at a pretty fast clip, so having a couple of extra batteries that this battery pack offers is very handy....