Fits Husqvarna Automower:435X AWD 2019->535 AWD 2019->320 Black 2023->430X Black 2023->ATTENTION! After replacing the battery, the mower must be updated at an authorized Husqvarna dealer. This is because the charge cycle counter needs to be reset as the 435X AWD and 535 AWD models have a limit on the number of charge cycles per battery.