Don't think twice before making savings! Our daily life is full of objects that need energy, but with these batteries that can be recharged more than 500 times via USB cable, you can relax for quite a while! So you save money while avoiding buying batteries too often and you reduce your waste and pollution! Each battery has a coloured LED indicator light. Micro-USB charging cable included. Ni-Mh battery. Capacity 450mAh, charging current 5V/80mA (for AAA batteries); capacity 1000mAh, charging current 5V/110mA (for AA batteries).