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Gardena 18V Lawn Mower Replacement Battery 2500mAh

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From $50.99 USD $62.99
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Fits Gardena 124562, R38Li, R50Li, R75Li mowers; replaces OEM part numbers 574 47 68-01, 505 69 73-20, 574 47 68-02, 574 47 68-03, 586 57 62-01, 586 57 62-02, 586 57 62-03, 586 57 62-04, 589 58 61-01.
18V, 2500mAh capacity delivers the amp-hours this blade motor expects without voltage sag under load.
Bayonet connector slides straight onto the mower pack slot; locking tab seats flush with a quarter-turn clockwise.
We ran charge cycles on a Gardena 38 mower; BMS accepted the pack cleanly and held voltage steady through mulch mode.
Before first use in spring, bring this cell indoors overnight if temperatures are below 10°C — cold Li-ion raises blade motor inrush current and can trip the BMS.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

18V

Amp

2500mAh

Gardena R38Li / R50Li / R75Li — 18V Li-ion Replacement Battery (574 47 68-01)

This 18V 2500mAh Li-ion battery replaces the original pack on Gardena robotic and cordless lawn mowers including the 124562, R38Li, R50Li, and R75Li series. It matches the OEM voltage rail and connector format so the mower's charging dock and BMS handshake function as expected. Capacity is 2500mAh (45Wh), sourced to match the original specification.

  • R38Li / R50Li / R75Li platform fit: These models share the same 18V battery bay, connector pinout, and BMS communication protocol. One replacement pack covers all three mower lines without adapter or modification.
  • Bench tested on actual hardware: We cycled this pack through simulated blade-load draws on the bench. The BMS held charge acceptance correctly and cutoff voltages sat within the OEM protection window across repeated discharge cycles.
  • Seasonal storage before first spring mow: If the mower sat unused through winter, bring the battery indoors for at least 12 hours before the first run. Below 10°C, Li-ion internal resistance rises sharply — the blade motor's inrush current can trip the BMS on a cold pack before the first row is finished.

BMS cutoff under thick grass or wet-lawn blade load

The blade motor on the R-series draws significantly more current through dense or wet grass than on a dry, short lawn. If the instantaneous current exceeds the BMS protection threshold, the pack shuts down mid-cut to prevent cell damage. This is not a faulty battery — it is the protection circuit doing its job. Let the pack rest for five minutes, clear any clumped cuttings from the blade channel, then restart on a drier pass.

Charger rejecting the pack after sitting all winter

Li-ion cells self-discharge slowly over months. A pack stored through winter can drop below the charger's minimum acceptance voltage — typically around 12V for an 18V pack — and the dock will show a fault or simply refuse to start a charge cycle. Place the battery in a warm room (above 15°C) for two hours first. If the charger still rejects it, check cell voltage with a multimeter at the battery terminals; anything above 10V can usually be recovered by a slow pre-charge using a compatible Li-ion charger set to a 0.1C trickle rate.

Compatible Models

124562 R38Li R50Li R75Li Mahroboter R40Li Mahroboter R45Li Mahroboter R70Li Mahroboter R80Li R40 R50 R70 R80 Robotic R38Li 2012 Robotic R38Li 2013 Robotic R38Li 2014 Robotic R38Li 2015 Robotic R40Li 2012 Robotic R40Li 2013 Robotic R40Li 2014 Robotic R40Li 2015 Robotic R45Li 2012 Robotic R45Li 2013 Robotic R45Li 2014 Robotic R45Li 2015 Robotic R50Li 2012 Robotic R50Li 2013 Robotic R50Li 2014 Robotic R50Li 2015 Robotic R38Li 2016 Robotic R38Li 2017 Robotic R38Li 2018 Robotic R40Li 2016 Robotic R40Li 2017 Robotic R40Li 2018 Robotic R45Li 2016 Robotic R45Li 2017 Robotic R45Li 2018 Robotic R50Li 2016 Robotic R50Li 2017 Robotic R50Li 2018 Robotic R70Li 2013 Robotic R70Li 2014 Robotic R70Li 2015 Robotic R75Li 2013 Robotic R75Li 2014 Robotic R75Li 2015 Robotic R80Li 2013 Robotic R80Li 2014 Robotic R80Li 2015 Robotic R70Li 2016 Robotic R70Li 2017 Robotic R70Li 2018 Robotic R75Li 2016 Robotic R75Li 2017 Robotic R75Li 2018 Robotic R80Li 2016 Robotic R80Li 2017 Robotic R80Li 2018

Replaces Part Numbers

574 47 68-01 505 69 73-20 574 47 68-02 574 47 68-03 586 57 62-01 586 57 62-02 586 57 62-03 586 57 62-04 589 58 61-01

Technical Specifications

Voltage18V
Amp Hours2500mAh
Capacity2500mAh
Rate45Wh
Net Weight259g /9.14 oz
Gross Weight329g /11.61 oz
Approximate Weight329g /11.61 oz
Dimension 71.70 x 67.40 x 56.25mm

Product Highlights

  • Brand: Gardena
  • Manufacturer: CS
  • Series: Standard
  • Color: Red
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Gardena mower cuts out halfway through a row, then starts again after a minute — what's causing that?

That pattern points to thermal protection in the BMS, not a faulty cell. The blade motor generates heat under continuous load, and once the pack temperature hits the protection threshold, the BMS cuts output until the cells cool. Allow a five-minute cooldown with the mower stationary, then resume. If it keeps happening on normal grass, check that the blade isn't clogged — restricted airflow around a jammed blade accelerates pack heating.

The battery feels noticeably warmer than my old one after the first few charges — is something wrong?

New cells run slightly warmer than a worn-in pack for the first four to five cycles while the chemistry stabilises. We measured surface temperature on this pack during bench conditioning and it stayed within the safe operating range throughout. After five full charge-discharge cycles, heat output normalises. If the pack is too hot to hold comfortably after cycle six, stop using it and check the charger output voltage at the dock terminals.

My Gardena robotic mower takes noticeably longer to finish its mowing zone in cold weather — is the battery failing?

Cold weather reduces Li-ion capacity — at 5°C, an 18V pack can deliver meaningfully less usable energy than at 20°C. This is normal electrochemical behaviour, not cell failure. Store the battery indoors overnight before a cold-morning mow and fit it to the mower just before you send it out. If reduced coverage persists at temperatures above 15°C after the first five cycles, the cells may need a full conditioning cycle: run the pack down to the mower's auto-stop point, then charge fully before the next use.

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