About this replacement
Gardena Grass Trimmer & Hedge Cutter — 18V Ni-MH Replacement Battery
This 18V 1500mAh Ni-MH pack replaces the original battery in the Gardena Turbotrimmer SmallCut 300 Accu and EasyCut 42 Accu hedge cutter. Both tools share the same voltage rail and connector format, so one battery covers trimmer and cutter alike. Capacity is 1500mAh at 18V — close to the OEM 1.6Ah spec and well within normal cell tolerance.
- Multi-tool compatibility across the Accu range: The SmallCut 300, EasyCut 42, and listed fit models all run the same 18V NiMH pack with an identical connector and BMS handshake — swapping the battery between tools works without modification.
- Bench tested on actual hardware: We ran full charge/discharge cycles — the BMS held voltage steady under load and tripped cleanly at the low-voltage cutoff without the tool stalling mid-cycle.
- First charge matters with Ni-MH: Run the pack through two to three full charge/discharge cycles before regular use — this conditions the cells and brings capacity to its rated level.
Why Ni-MH behaves differently from lithium in garden tools
Ni-MH cells lose charge gradually during storage — a pack left unused for a month can drop to 70% capacity or lower. Store the battery indoors at room temperature, partially charged. Unlike lithium chemistry, Ni-MH tolerates full discharge without permanent damage, so running it down completely before charging is fine.
Trimmer cuts out early or hedge cutter loses power before the charge indicator drops
This is voltage depression — a Ni-MH effect where repeated partial charges create a false low-voltage floor inside the cells. The BMS reads the depressed voltage as depleted and cuts power prematurely. Fix it by running the pack fully flat, then charging completely, two or three times in a row. That resets the voltage baseline and restores normal capacity.