Question 1

1. What's the difference between charger uptime and charge success rate?

Accepted Answer

Uptime measures whether a charger reports itself as available; charge success rate measures whether a session that started actually delivered power. ChargerHelp's 2025 report found networks reporting 98.7–99.9% uptime while only 71% of attempts succeeded — a charger can be "up" and still fail the driver in front of it.

Question 2

2. Do we need new hardware to enable remote monitoring?

Accepted Answer

Usually not. Any OCPP-compliant charger already sends Heartbeat, StatusNotification and MeterValues messages — the gap is typically in how a central platform ingests, thresholds and routes those signals, not in the charger's own telemetry.

Question 3

3. How quickly should a critical fault be dispatched to a technician?

Accepted Answer

Safety-related faults (ground failure, over-current) should page on-call immediately, with a remote reset attempted first and a field dispatch auto-ticketed if unresolved within roughly 30 minutes. Lower-severity faults can sit on a same-shift watchlist rather than triggering an immediate truck roll.

Question 4

4. Can one dashboard monitor chargers from different hardware manufacturers?

Accepted Answer

Yes, provided every charger speaks OCPP and the platform normalizes vendor-specific error codes against a common set like the ChargeX Minimum Required Error Codes. This is the main reason mixed-OEM networks centralize monitoring in one charging management system rather than checking each vendor's own portal separately.

Question 5

5. Why do chargers get less reliable over time even without visible damage?

Accepted Answer

Connectors wear from repeated mechanical cycles, firmware drifts out of date across a mixed fleet, and components age unevenly. ChargerHelp's data shows first-time success rates falling from roughly 85% on new stations to under 70% by year three without continuous, active maintenance — reliability isn't a one-time commissioning outcome.

ev charger maintenance

EV Charger Remote Monitoring: Cutting Downtime Before Drivers Notice