4 Connectivity
4
A consistently strong cellular signal is needed before installers can activate the vehicle charging station.
Weak or sporadic signal can affect crucial aspects of the charging station, including:
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Accuracy in reporting
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Ability for drivers to use the mobile app
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Ability for customer support to troubleshoot problems
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Support for advanced features such as Power Management or Waitlist
A strong signal is also required for the ChargePoint Assure maintenance and management programs.
ChargePoint stations use cellular data connections to reach ChargePoint Cloud Services. This allows secure,
PCI-compliant data connections without requiring any other form of internet connectivity at an install site
or imposing additional network management responsibilities on a site host.
Each station has its own cellular connection.
Signal Strength and Quality
You must use a cellular signal detection device (such as a Siretta Snyper LTE or equivalent) to take signal
strength readings at the exact proposed mounting location of the charging station. If the charging station
does not have its own cellular connection, take the signal strength reading at the proposed mounting
location of the gateway station.
In North America, ChargePoint products all support LTE bands 2, 4, and 5. The most commonly supported
carriers to check during site evaluation are:
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US: AT&T, T-Mobile, and Verizon
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Canada: Rogers, Telus, and Bell
You must test the LTE signal strength at the proposed mounting location of every gateway station and
ensure the location meets the minimum RSRQ at -12.5 dB or better, for RSRP measured at -90 dBm or
better. Refer to the graph for acceptable combinations.
Note: These numbers are all negative, so -70 dBm is stronger than -85 dBm, and -90 dBm is weaker.
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