The battery for Husqvarna Automower® 435X AWD & 535 AWD is an 18V, 8.0Ah battery mounted at the rear of the mower. When selecting a battery for your Automower 435X, the manufacturing year must be considered. For models produced before 2023 with a serial number lower than 232403230, the battery pack with holder and cover should be used. For 2023 models and newer with a serial number higher than 232403231, the separate battery 5341994-01 should be used instead.

After replacing the battery, the mower needs to be calibrated by an authorized Husqvarna dealer because the charge cycle counter must be reset. The 435X AWD and 535 AWD models have a charge cycle limit per battery.