1-4 AA/AAA cell smart quick charger features:

• Intelligent charging. 
• Charges 1-4 AA or AAA NiMH cells.
• World voltage auto detect 100-240VAC input via wall mount plug.
• Capacity & Battery Life Checker - Discreet charging indicator lights that shine through the front face of the charger displaying battery state of charge %. Each channel's indicator light operates independently of the other channels.
  • RED: ~0-20%
  • YELLOW: ~20-80%
  • GREEN: ~80-100%
• Individual cell charging control.
• Peak voltage control.
• Temperature control/protection.
• Minus delta voltage detection.
• Safety timer control.
• Alkaline battery detection that automatically prevents charging if non-rechargeable alkaline batteries are accidentally inserted.
• Short circuited cells detection.
• Can charge AA cells up to 2700mA capacity and AAA cells up to 1000mA. 
• Includes 4 x Panasonic BK-3MCCE Eneloop 2100 cycle AA NiMH cells.

Charge times:

• For 2000mAh cells - 1 x AA 75 minutes, 2 x AA 110 minutes, 3-4 x AA 220 minutes.
• For 800mAh cells - 1 x AAA 65 minutes, 2 x AAA 100 minutes, 3-4 x AAA 200 minutes.