E02
TerraMow Low Battery Voltage Under Load

Robot stops and displays E02 shortly after leaving the charging station; may beep and shut down.

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Possible Causes

Aged or failing battery cells, Loose battery harness connector, Faulty battery temperature sensor, Defective charging station output

How to Fix / Troubleshooting

Safety: Switch the mower OFF before handling. Keep the unit on a flat, stable surface.

  • Verify full charge: Place the TerraMow on the charging dock until the display or LED indicates 100% or full charge. Then start a mowing cycle and observe how long it runs before E02 appears.
  • Inspect charging contacts: Clean the charging pins on the TerraMow and the charging station with a dry cloth. Remove grass, dirt, or oxidation that could reduce charging current.
  • Check battery harness: Open the battery compartment and ensure the battery harness connector is fully seated in the TerraMow main board. Look for signs of heat damage or discoloration.
  • Test with shorter mowing area: Set a small test zone and run the mower. If E02 appears within minutes even after full charge, the battery pack is likely degraded.
  • Replace if needed: Install a compatible TerraMow lithium battery pack if runtime is significantly reduced or E02 is frequent.
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Repair Difficulty

Easy 2/5

Required Part

TerraMow Lithium Battery Pack
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