Battery description:

Model: RYDBATT-Roomba-400   

Cell Type:  Ni-MH

Voltage:    14.4V                               

Capacity:    3300mAh

Replacement rechargeable battery for iRobot Roomba 400 Series, Discovery Series and Original models.

Compatible with iRobot Roomba 400 Series, Discovery Series and Original models.

Powers Roomba for up to 120 minutes of continuous clean up.

Note: Not compatible with Roomba 500 Series robots.

Reminder: Keep a second battery on hand to double Roomba's cleaning time