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Automower battery wear — cycles, shrinking runtime, and when to replace
Automower batteries are consumables. The battery wears by charge cycles, and because
a robot mower docks several times a day, cycles accumulate fast — thousands per season on a
big lawn. Nominal life for the Li-ion packs is in the region of 2,000–3,000 cycles.
Symptoms of a worn battery
- Runtime per charge noticeably shorter than last season (e.g. 60 minutes where it used to
do 100).
- More frequent docking, less lawn covered per day.
- In cold weather the decline is sharper.
Don't confuse it with…
- Charging faults: if charging keeps interrupting (station/power-supply problems), the
mower leaves half-charged and runtime looks short. Fix charging first, then judge the
battery.
- Heavy grass: long, wet growth can halve runtime on a healthy battery.
Replacement
On most Automower models the battery is user-replaceable with basic tools. Buy the correct
pack for your model and serial number — confirm the part number with a Husqvarna dealer, as
they vary by model year. If you track cycles (the API exposes the lifetime count), reset your
baseline when you fit the new pack so wear tracking starts fresh.
MowerWatch spots this automatically. It watches your Automower®'s own API data,
reconstructs every stop with its cause, and tells you which part to check — before the
dealer visit.
Try it free for 3 days — no card needed.