SterlingTek's Premium Sony NP-F330, NP-F550 Digital Camera Battery Pack Equivalent -SterlingTek&trade; Our SterlingTekTM Sony np-f330 equivalent is a high performance Lithium Ion battery with no memory effect 2200 mah!!! 4 Hour Plus battery The higher the mAh rating is, the more power a battery will store and it will last longer! We always sell new high quality items and we are willing to back them up at SterlingTek TM!