Energizer XP4000 Universal Rechargeable Power Pack Portable charger for digital cameras and camcorders--just plug into USB port for instant power Included EZ Charger compatible with most internal (5V) digital camera batteries Comes with 9 tips to fit a wide range of devices Can also be used to charge smartphones, cell phones and MP3 players Comes pre-charged out-of-the-box; maintains charge for up to 1 year