Wolf Garten BAT6000A 25.6V Robotic Lawn Mower Compatible Battery

Wolf Garten R.S.3000 / R.S.1800 / R.S.1000 — 25.6V LiFePO4 Replacement Battery (BAT6000A)

This is a 25.6V LiFePO4 replacement battery rated at 6000mAh (153.6Wh) for Wolf Garten robotic lawn mowers. It fits the R.S.3000, RS3000, R.S.1800, and R.S.1000 series, along with 12 additional compatible models. LiFePO4 chemistry holds voltage more consistently under blade motor load than standard Li-ion, which matters on autonomous mowers cutting unattended.

• R.S. series mower compatibility: These models share a common 25.6V battery rail, dock connector pinout, and BMS handshake protocol. Swapping between R.S.1000, R.S.1800, and R.S.3000 variants is supported because the charge management circuit reads the same battery ID across all three platforms.
• Bench tested on actual hardware: We ran this pack through full charge-discharge cycles with blade motor inrush loads simulated at peak draw. The BMS held cutoff thresholds correctly and the cell balancing circuit engaged as expected across all eight cells.
• Seasonal storage tip: If the mower will sit unused for more than six weeks, charge the pack to around 50–60% before storing. LiFePO4 cells discharged to near-zero over a long winter can drop below the charger's acceptance voltage and the dock will show a fault on reconnection.

BMS cutoff during thick-grass or wet-grass blade load

When the mower hits dense or wet grass, the blade motor draws a sharp inrush current well above its steady-state load. If the battery pack is already warm from a long run, the BMS may interpret that spike as an overcurrent event and cut power. LiFePO4 cells have a lower internal resistance than older NiMH packs, but the BMS protection threshold is still calibrated for a maximum instantaneous draw. After a cutoff, the mower typically recovers within 60–90 seconds once the BMS resets — if it cuts out repeatedly in the same patch, reduce the mowing zone boundary or schedule a second pass at a shallower overlap.

Charger dock showing fault light after the mower sat in storage all winter

LiFePO4 cells self-discharge slowly but steadily — roughly 2–3% per month at room temperature. A pack stored from October to April can drop below 20V, which is under the threshold most Wolf Garten dock chargers accept for a standard charge cycle. The charger sees a voltage it treats as a damaged or absent cell and flags a fault rather than attempting to charge. To recover the pack, use a compatible bench charger with a manual LiFePO4 recovery or "wake" mode to bring each cell above 2.5V, then return it to the dock — target 25.6V nominal before docking.