EBL 8 Bay AA AAA Battery Charger with AA 2800mAh (4 Pack) and AAA 1100mAh (4 Pack) Ni-MH Rechargeable Batteries Super Capacity - 2800mAh AA 1.2Volt & 1100mAh AAA 1.2Volt Ni-MH rechargeable batteries, the highest capacity on Amazon. Storage Cases - every 4 batteries we packed in one professional battery storage case - carefulness & professional. Safety Assurance - good at shedding heat, short circuit and input voltage detection, automatically stop charging when voltage up to 3.4V - The king of stable performance Convenient Usage - AC 100-120V 50/60Hz input, using temperature of charger: 0~35 - convenient everywhere. Biggest Save - best products but lowest price, whats more - you gain our fast after sale service.