Common AA cells (penlight-size) NiMH batteries have nominal charge capacities (C) ranging from 1,100mAh to 2,500mAh at 1.2V
Usually measured at a discharge rate of 0.2 x C per hour
Useful discharge capacity is a decreasing function of the discharge rate, but up to a rate of around 1 x C (full discharge in one hour), it does not differ significantly from the nominal capacity