Includes: One Charger and 4AA 2200 mAh NiMH Batteries. Lasts up to 4x longer in digital cameras. 15-Minute Charger Features: Safety - Microprocessor control; Bad battery detection; Surge protection; Short circuit protection; Overcharge protection; Temperature control; Timer control. Convenience - Batteries ready for use in 15 minutes; AA/AAA Charging; Automatically detects AA or AAA battery; Individual cell channel charging; Maintenance charge; Charge status indicator. About Rechargeable Batteries: The higher the mAh rating, the more you get out of your device. High drain devices need higher mAh batteries. Lower mAh capacity is sufficient in low drain devices. Charger made in China. Batteries made in Japan.