Mr.Batt NiCD AA Rechargeable Batteries for Solar Lights 1.2V 1000mA, 16 Pack;

Specifications:
Battery Type: Ni-CD
Battery Size: AA
Capacity: 1000mAh
Voltage: 1.2V
Battery life: 1200 cycles
dimensions: H 1.97 X D 0.57 inches

Packages:
16 X AA 1000 mAh rechargeable batteries

What's the importace of the mAh rating?
mAh rating will generally translate to the runtime/use-time of your batteries. These 1000mAh batteries can replace any rating (such as 600mAh, 800mAh), it will give you more run time when fully charged.