3500mah Ni-mh Replacement Battery for Irobot Roomba 14.4v Battery

Battery type: Ni MH battery / voltage: 14.4v/capacity: upgraded 3500mah (replace Roomba battery, not original)Compatible with for iRobot Roomba 500 510 530 535 550 560 570 580Reliable protection function, built-in overload, overheating and over discharge protectionWork as a real part. Easy to charge and connect APS battery; No memory effect, longer running time than OEM batteryPlease note the nickel cadmium nickel hydrogen rechargeable batteryColour: yellow + greenPackage Contents:1 * Sweeping robot accessoriesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.