# Troubleshooting

LED Color | LED Behavior | Cause | Solution
--- | --- | --- | ---
Red | Steady light. | The battery is too hot or too cold. | The charging process starts when the battery has reached the correct charging temperature. Refer to the Safety Information of the battery for charging temperatures.
Red | Flashing at 1-second intervals. | The battery has not been placed correctly on the battery holder. | Make sure that the battery is placed correctly on the battery holder.
Red | Flashing at 1-second intervals. | The battery is defective. | Refer to the Product Instruction of the battery for more details on battery LED indicators. If a solution cannot be found in the Product Instruction of the battery, please contact your local Atlas Copco Customer Center for assistance.
Green | Flashing at 5-second intervals. | The battery is fully charged and has automatically shut off as a safety measure.* | The battery can be used as normal.
Green | Flashing at 5-second intervals. | An error has occurred and the battery has been shut off. | Press the release button to start the battery again. If the error occurs again, please refer to the Product Instruction of the battery for more details on battery LED indicators. If a solution cannot be found in the Product Instruction of the battery, please contact your local Atlas Copco Customer Center for assistance.

* This battery behavior was introduced in battery software version 1.6.14.