This Hitech 3-hour quick charger is great for gadgets such as wireless mice / MP3 players / Digital Cameras. It charges 2000mAh AA battery in 2.8 hours and 2400mAh AA battery in 3.5 hours. The charger comes with a built-in LCD screen which shows the charging and discharging status for each battery. And its beeper function reminds you when the charging process is completed. The charger automatically switches to trickle charge mode upon completion of charge. It can charge AA / AAA Ni-Cd and Ni-Mh rechargeable batteries. The charger also detects when a battery is bad. The package comes with a charger, adapter, car adapter, and a four-pack of Yuasa EniTime AA Ni-MH 2100mAh (2000 mAh minimum) batteries + clear battery case. These batteries come pre-charged to 80% and ready to use, and have an extremely low self-discharge rate, similar to Sanyo Eneloop batteries. Charger is sealed in plastic clam shell packaging and is an excellent gift for the holidays. Charging Current: AA 1000mA, AAA 500mA, trickle charge 100mA for AA, 50mAh for AAA. Batteries must be charged before use. They can be charged completely or partially approximately 1000 times before requiring replacing.