USB Rechargable Battery in AAA size

Material:Ni MH / Steely / PC&ABS Plastic
Norminal Voltage: 1.2V
Typical Capacity:  550mAh
Recommended Discharge: 1 000mA
Discharge upper limited: 4 350mA
Charge Time: 4 hours (charge with computer USB port)
The indicator light shine all the time when charged, and turn off automatically when charge full.
lt can be recharged about 500 times in three years.