Included with the BQ-CC50E charger are 2 AA BK-3MCCE batteries

full charge detection function
overcharge protection
charging time: AA up to 10 hours (2000 mAh)
2 AA batteries included
for R6 / AA and R03 / AAA NiMH batteries
the ability to simultaneously charge 1 or 2 batteries
2 LED indicators
Charging control will turn off the charger after about 16 hours
typical capacity: 2000 mAh
minimum capacity: 1900 mAh
voltage [V]: 1.2
dimensions: 50 x 118 x 40 mm
weight: approx. 190 g