Network connection and troubleshooting (Luna)

Modified on Fri, 13 Mar at 1:48 PM

Configuration & troubleshooting guide for 4G and Wi-Fi

Mobile connectivity (4G)

Charge Amps Luna is equipped with built-in mobile connectivity (4G).
The SIM card is integrated in the product and activates automatically when the charger is powered on. This means that the charger will normally connect to the internet immediately after installation, without requiring any network configuration.
Installers can therefore usually expect the charger to have internet connectivity as soon as it is powered on.
However, mobile connectivity depends on signal strength in the mobile network. In some installations, such as garages or remote areas, the signal may be weak or unstable. In these cases, Wi-Fi can be configured as an alternative connection.

Requirements for Wi-Fi connection

Before configuring the charger, it is important to verify the following:

• The signal strength must be sufficient.
Recommended signal strength is RSSI better than −80 at the charger.

• The network must use the 2.4 GHz frequency band.
The charger cannot connect to networks that only use 5 GHz.

• If your router uses both 2.4 GHz and 5 GHz (dual-band) the charger may occasionally lose connection.
It may therefore be necessary to lock the network to 2.4 GHz or use a separate access point / Wi-Fi extender.

• Mesh networks may cause connection issues.
If mesh is used, the access point closest to the charger should have a unique network name (SSID).
This ensures the charger connects to the correct access point.

• Make sure you have the correct Wi-Fi credentials.
You will need the network name (SSID) and password.

Wi-Fi configuration

Configuration is performed using the Charge Amps Installer app, available in the App Store and Google Play.
The charger communicates with the app via Bluetooth during installation.

Restart the charger by switching the circuit breaker off and on.
After startup you have approximately 15 minutes to complete the configuration.
Enable Bluetooth on the device used for configuration.
Download and open the app Charge Amps Installer.
Proceed by selecting “Direct device configuration”.
Select “Scan via Bluetooth”.
All nearby Charge Amps devices broadcasting Bluetooth will appear in the list.
Select the charger you want to configure, identified by its serial number.
Enter the charger PIN code and press “Authenticate”.
Once logged in, the charger settings menu will open.
Go to the “General” tab and press “Edit”.
Select “Edit WiFi network”.
You can now either:
• select a network from the list
• or choose “Enter network manually” to enter the credentials manually.
Enter the SSID and password and press “Connect”.
When you are finished configuring the charger, press “Complete configuration”.

After a few minutes the connection can be verified in the Charge Amps Partner Portal or in the Charge Amps user app.

If the charger is displayed as “Online” or “Available” instead of “Offline”, the configuration is complete.

Problems connecting the charger via mobile connectivity (4G)

If the charger does not come online via the mobile network after installation, start by checking the following:

Quick checks

Check the following before proceeding with further troubleshooting:

• The charger is powered and recently restarted

• The charger is installed in a location with mobile network coverage

• The charger has been restarted via the circuit breaker

• Check the connection status in the Charge Amps Partner Portal

If the mobile connection is unstable, Wi-Fi can be configured instead.

Checking 4G signal strength

Mobile signal information can be found in the OCPP log under the Data section.

The following values are used to evaluate the quality of the mobile connection.

RSRP – Reference Signal Received Power

Signal strength should be better than −100 dBm and preferably better than −90 dBm.

The closer the value is to −100 dBm, the worse the quality, speed and reliability will be.

RSRP (dBm)	Signal strength assessment	Description
≥ −80	Excellent	Strong reference signal received from the base station with good speed if quality is comparable
−80 to −90	Good	Good reference signal with stable data speeds
−90 to −100	Fair to poor	Limited signal with reduced data speeds
≤ −100	Very poor	Risk of disconnection. Consider using Wi-Fi instead

RSRQ – Reference Signal Received Quality

Signal quality should be better than −17 dB and preferably better than −15 dB.

RSRQ (dB)	Signal quality assessment	Description
≥ −10	Excellent	Excellent signal quality
−10 to −15	Good	Good signal quality with stable speeds
−15 to −17	Fair to poor	Limited signal quality
≤ −17	Very poor	Risk of disconnection

SINR – Signal to Interference + Noise Ratio

SINR should be better than 3 dB and preferably above 13 dB.

SINR (dB)	Signal quality assessment	Description
≥ 20	Excellent	Excellent signal quality
13 to 20	Good	Good signal quality
3 to 13	Fair to poor	Limited signal quality and reduced speeds
≤ 3	Very poor	Risk of disconnection

If the signal strength is very poor, Wi-Fi is recommended instead of mobile connectivity.

Common issues

I cannot find the charger via Bluetooth

Check the following:

• The charger is powered and recently restarted

• Bluetooth is enabled on your mobile device

• You are within Bluetooth range of the charger

• The app has Bluetooth and location permissions

• Try restarting the charger and scanning again

• Try using another mobile device

I enter Wi-Fi credentials but the charger does not connect

Check the following:

• SSID (network name) and password are entered correctly

• Wi-Fi signal strength is stronger than RSSI −80

• The network uses 2.4 GHz

• If using a mesh network, ensure the access point has a unique SSID

• Restart the charger and repeat the configuration from step 1

Need more help?

Please contact in the following order:

Installer → Distributor → Charge Amps support

for further assistance.