Chosen to replace the original battery that gave clear signs of weakness, it is perfectly compatible with Roomba 564 Pet Series. Being a battery, it remains to be seen over time if it keeps its promises ... or not! The announced power output is greater than the original battery (4500mAh against 3000mAh). Hard to say if it really changes something. Normally, the vacuum cleaner should run longer ... If a courageous time to time ...; o)