Configuration & troubleshooting guide for 4G, LAN and Wi-Fi

Mobile connectivity (4G)

• Charge Amps Dawn is delivered 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 the charger normally connects to the internet immediately after installation, without requiring any network configuration.

• Installers can therefore in most cases expect the charger to have an internet connection already at the first startup.

• Mobile connectivity depends on signal strength in the mobile network. In some installations, for example in garages or more remote locations, the signal may be weak or unstable. In such cases Wi-Fi can be used as an alternative connection.

• It is also important to know that Charge Amps Dawn uses LTE-M for mobile connectivity. This is a more power-efficient but slower mobile connection, which may result in longer connection or communication times.

Requirements for the Wi-Fi connection to work

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

• 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 its own unique network name (SSID).
  This ensures the charger always 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 done using the Charge Amps Installer app, available in App Store and Google Play.
The charger communicates with the app via Bluetooth during installation.

1. Restart the charger by switching the circuit breaker off and on.
   After startup you have approximately 15 minutes to complete the configuration.

2. Enable Bluetooth on the device used for configuration.

3. Download and open the Charge Amps Installer app.
   Select “Direct device configuration”.

4. Press “Scan via Bluetooth”.

5. All nearby Charge Amps devices broadcasting Bluetooth will appear in the list.
   Select the charger you want to configure, identified by its serial number.

6. Enter the charger PIN code and press “Authenticate”.

7. When logged in, the charger settings menu will open.
   Go to the “General” tab and press “Edit”.

8. Select “Edit WiFi network”.

9. You can either:

   • select a network from the list

   • or choose “Enter network manually” to enter the network credentials manually.

10. Enter the SSID and password and press “Connect”.

11. When you have finished the configuration, press “Complete configuration”.

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

If the charger is shown 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 continuing with further troubleshooting:

• The charger is powered and recently started.

• The charger is installed in a location where mobile network coverage is available.

• The charger has been restarted via the circuit breaker.

• Check the connection status in Charge Amps Partner Portal.

If the mobile connection is not stable, Wi-Fi can be configured instead.

Checking 4G signal strength

Information about the mobile signal strength can be found in the OCPP log under the Data section.

Adequate signal strength in the mobile network is evaluated using the following values.

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.

RSRQ – Reference Signal Received Quality

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

SINR – Signal to Interference + Noise Ratio

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

If the signal is very weak it is recommended to use Wi-Fi instead of mobile connectivity.

LAN

LAN normally requires no configuration. Connect a network cable between the charger and the router – the unit connects automatically.

Requirements:

• Internet connection without captive portal or authenticating proxy

If the charger does not come online via LAN, check the following:

IP address (DHCP)

The charger uses DHCP and requires a dynamic IP address.

Ensure that:

• DHCP is enabled in the network

• The router has available IP addresses to assign

For IT / network administrator

Basic requirements

• DHCP required (no static IP support)

• Only outbound traffic is required (no inbound traffic needed)

Allow the following destinations:

HTTP (port 80)

• 20.50.2.11

• Used for CAPI (capi.charge.space)

HTTPS (port 443)

• 20.238.130.224/28

• Used for OCPP (ocpp.charge.space)

FTP (port 21 + dynamic ports in PASSIVE mode)

• 104.41.201.115

• Used for firmware updates (may in some cases use HTTPS)

Other (recommended to allow):

• NTP: time.google.com (UDP 123)

• ICMP: ping to 8.8.8.8 (connectivity test)

Common blockers (corporate networks):

• Strict outbound filtering

• Proxy requiring authentication

• VLAN with client isolation

• Blocked FTP (most common cause of failed updates)

Common issues

I cannot find the charger via Bluetooth

Check the following:

• The charger is powered and recently started.

• 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?

Contact in the following order:

Installer → Distributor → Charge Amps support

for further assistance.