Applications: Notebook PDA MP3 Player Media Player Mobile Phone Digital Camera Portable DVD IPods (Charge or Power your Electric Devices Directly) Features: 1. Compact design. 2. Easy-clip sliding cover makes it easy to insert or replace batteries. 3. LED for charging status and working status. 4. Multi-protection ensures its safety and stability.Charging management,Short circuit protection,Overcharging protection,Over discharging protection,Over heat protection) 5. Includes four rechargeable Ni-MH batteries. 6. Supports both Alkaline batteries and Ni-MH,Ni-Cd batteries. 7. Super efficiency with Cell-Direct technology. 8. Simply charged by the USB port of PC.