EV chargers depend on stable connectivity for availability monitoring, remote diagnostics, software updates, user authentication, and payment processing where required. Distributed outdoor sites, cabinets, and variable RF conditions demand predictable connectivity and recovery.
Chargers are often deployed across car parks, roadside locations, and basements with limited site access. Continuous operation with unattended hardware requires resilient cellular links for consistent status reporting and remote support.
EV charging systems must be secured and managed for predictable uptime. Typical capabilities include:
Chargers connect via Ethernet to a local LAN or directly to an industrial cellular router with external antennas. The router enforces firewall rules and, where relevant, VLAN separation, and terminates persistent VPN tunnels (TLS/IPsec) to the operator’s backend platform or SD-WAN controller. Telemetry, session state and fault events are forwarded to the OCPP/backend management system, while management access is handled on a separate secure plane using certificate-based authentication.
EV charging reliability depends on predictable session behaviour. Keepalives, rapid re-authentication and health-check driven recovery reduce dropped sessions during transient RF events. Where supported, chargers should buffer critical logs and synchronise once connectivity returns. Automated failover rules based on link quality and availability reduce downtime, while duplicate suppression and consistent timestamps help maintain auditability.
Fixed lines are often unavailable, slow to provision, or controlled by third parties at deployed charging sites. Cellular enables rapid rollout, independent operations, and resilience through operator diversity (dual-SIM or multi-operator eSIM) without requiring additional circuits. While fixed lines can provide higher sustained bandwidth in ideal conditions, modern 4G and 5G networks deliver adequate throughput and latency consistency for charger monitoring, authentication, and management when designed with appropriate recovery behaviour.
For related deployment guidance, see our POS and parking connectivity, DeviceHub management and VPN and antenna optimisation pages.
If you operate systems that require stable, secure connectivity, we can help specify the correct industrial router, antenna setup and connectivity approach for your deployment.