Sony Ultra Power Quick Charger with Refresh Function (Discontinued by Manufacturer) Set of 4 rechargeable AA Ni-MH batteries with a charger; accommodates 4 AA or 4 AAA Ni-MH batteries Refresh function eliminates the memory effect that Ni-MH batteries are normally subject to, renewing the original usable battery capacity 4 charging LED indicators and one refresh LED indicator Compact size and worldwide voltage capacity allow for easy charging literally anywhere you have access to AC power Ideal for high-draw devices like digital cameras, PDAs, game players, MP3 players, and portable CD players