Powerextra 14.4V 3800mAh Extended Capacity Battery for iRobot Scooba 330 340 350 380 385 590 5800 5806 5900 5910 5920 5930 5940 5950 5999 6000 6050 34001 APS 14904 Replacement Rechargeable Battery 100% Compatible with original manufacturer equipments and chargers High quality, high capacity battery for longer running time.convenient to use Compatible APS replacement battery for Floor Washing iRobot Scooba 5800 and 5900 No memory effect. Can be charged or discharged as needed without loss of capacity. 30 Days Money Back 12 Months - Free Exchange Guarantee!