Gardena Robotic R160 Replacement Battery 18V 3000mAh

Gardena Robotic R160 2013–2015 — 18V Ni-MH Replacement Battery

This is an 18V 3000mAh Ni-MH replacement battery for the Gardena Robotic R160 robotic lawn mower, covering the 2013, 2014, and 2015 model years. It powers both the blade motor and the onboard navigation system. Capacity is 54Wh, matching the original specification.

• R160 2013–2015 compatibility: All three model years use the same 18V battery housing, connector pinout, and charge communication protocol. The BMS handshake across this range is identical, so one battery covers all three without modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on an R160 mower. The BMS accepted the charge handshake on first contact, and the blade motor drew current normally through start, run, and stop phases.
• Seasonal storage tip: Ni-MH cells self-discharge faster than Li-ion during long storage. If the mower sits unused from autumn through spring, run a full charge cycle before reinstalling the battery — a pack sitting at low voltage for months may need two full cycles before it reaches rated capacity.

Charger showing fault after the R160 sat in the garage all winter

Ni-MH batteries self-discharge at roughly 1–2% per day at room temperature, and faster in cold garages. After several months of storage, a pack can drop below the charger's minimum acceptance voltage. The Gardena docking charger reads this as a fault condition and refuses to begin a charge cycle. To recover the pack, apply a slow trickle charge using a compatible Ni-MH charger set to a low rate — this brings the cell voltage back into the range the dock will accept, usually within 30–60 minutes of trickle input.

Mower cuts out mid-row then restarts on its own after a short pause

This is thermal protection activating inside the battery. Thick grass or wet conditions force the blade motor to draw sustained high current, which heats the cells. Once internal temperature hits the BMS threshold, it disconnects the pack to protect the cells. The mower appears to recover because the BMS resets once temperature drops. Let the unit sit for five minutes before resuming — if cutouts repeat on every run, check that the blade is sharp, as a dull blade multiplies the current draw significantly.