It is common to encounter situations where your emWave2 or PSR device does not immediately show charging lights when plugged in. This is typically due to a deep battery discharge or a connection issue.
Below is the recreated Knowledge Base article with detailed troubleshooting steps to help you restore your device to full power.
Troubleshooting: No Lights Showing During emWave2/PSR Charging
When you connect your emWave2 or PSR to a USB charging cable (either through a computer or a USB wall adapter), a green light should normally appear immediately in the pulse sensor area to indicate that charging has begun. If your device remains dark, please follow these steps.
1. Handling Deep Discharge
If the battery has been completely depleted (deep discharge), the unit may not show any lights at first.
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The Solution: Leave the device plugged in and wait 15–20 minutes.
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What to Expect: At some point during this window, the charging indicator light should activate. Once the light appears, continue charging the unit for an additional 2 hours to reach a full charge.
2. Resolving Incomplete Connections
In some cases, you may see a quick flash of two solid lights at the bottom of the breath pacer, but the pulse area remains dark and the unit then goes completely silent.
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The Cause: This usually indicates an incomplete electrical connection, often occurring when using a specific wall socket.
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The Solution: Unplug the charger and try a different wall socket or a different USB port on your computer to establish a more stable connection.
3. Proper Charging Maintenance
To ensure the longevity of your device’s battery, follow these best practices:
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Charging Time: A full charge typically takes 2 hours once the indicator light is active.
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Usage: Always disconnect the emWave2/PSR from the battery charger before you begin a session.
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Avoid Overcharging: It is not recommended to leave the emWave unit on the charger for more than 2 hours at a time.
Important Notes
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Device Versions: Please note that the two earliest versions of the emWave PSR (models PD200605 and PD200608) do not feature the immediate green charging light indicator.
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Still no lights? If the device has been plugged in for over 30 minutes and remains completely unresponsive, try using a different USB charging cable to rule out a faulty cord.