About this replacement
Gardena PowerMax Lawnmower — 18V Li-ion Replacement Battery
An 18V 2000mAh (36Wh) Li-ion battery for the Gardena PowerMax 32/36V walk-behind lawnmower and compatible P4A platform tools. The PowerMax runs on 18V cordless power and accepts any POWER FOR ALL ALLIANCE battery — this unit fits that standard. Voltage, capacity, and connector all match the original specification.
- P4A platform compatibility: All listed models — PowerMax 32/36V, TCS 20, HandyMower 22/18V, and the wider P4A range — share the same 18V rail and connector format, so one battery works across the whole system.
- Bench tested on actual hardware: We ran full charge/discharge cycles — the BMS held voltage steady under load and cut off cleanly at the low-voltage threshold without false triggers.
- First charge after storage: If the battery has been sitting unused, run a full charge before the first cut. Li-ion cells need one full cycle to re-establish accurate charge reporting in the mower's indicator.
How the 18V rating works with the PowerMax 32/36V name
The "32/36V" label refers to the mower's cutting width (32cm) and the combined voltage when two 18V batteries are used in series. This 2000mAh unit is a single-battery fit for the P4A solo configuration and compatible single-slot tools. Running two batteries in series is a separate setup — this listing covers the 18V single-slot requirement only.
Mower stops mid-cut — what's happening and how to fix it
If the PowerMax cuts out before the battery indicator reads empty, the BMS is likely hitting its thermal or low-voltage cutoff early — common in cells that have degraded or overheated. Remove the battery, let it cool for ten minutes, then reinsert. If it resumes a normal session, heat was the trigger. If cut-outs persist from a fresh charge, the original battery's cells have capacity-faded and replacement is the correct fix.