Reliability, rollout tooling, and architecture notes from the team building AmpNexus. Deep dives into firmware delivery, OCPP integrations, and our developer platform.
You can't point a thousand real chargers at a test environment — so how do you test the software that runs them? Inside our approach: OCPP simulation, per-release quality gates, twice-weekly load tests, and publishing the results.
Charge point events need to reach billing, CRM and ops tooling in real time. A practical comparison of webhooks and SSE for charging telemetry — when to use each, and the delivery guarantees that actually matter.
Charger downtime is rarely one dramatic failure. It's connectivity drops, stuck firmware, silent faults and zombie sessions. A field guide to the real causes, and the monitoring that catches each one.
Charging networks are payment systems, IoT fleets and grid-connected infrastructure at once. A practical tour of the attack surface — device, transport, platform and process — and the controls that actually matter.
Most charging networks will run OCPP 1.6 and 2.x side by side for years. Here's a practical migration strategy that doesn't bet your uptime on a single cutover weekend.
Councils with district partners, operators with franchisees, white-label networks under one roof — multi-tenancy is what makes them safe. What tenant isolation actually means, and how to test whether a platform really has it.
Repointing a live charger fleet to a new backend is routine when planned well — and chaos when it isn't. A migration playbook: discovery, cohorts, the cutover moment, and the data you must not leave behind.
Most sites can't give every charger full power at once — and they don't need to. How static and dynamic load management work, what OCPP charging profiles actually do, and the failure modes to design for.
The gap between 'installed' and 'earning' is where charging projects lose weeks. A commissioning playbook: pre-staging, guided installer flows, acceptance criteria and the handover evidence that prevents disputes.
One talks to chargers, the other talks to the market. A working map of the charging protocol landscape — OCPP, OCPI, OpenADR and friends — and what each one means for your architecture.
Every disputed charging invoice traces back to a data problem: missing meter values, zombie sessions, double-counted events. The engineering discipline that makes billing boring — in the best way.
Plug in, walk away, get billed correctly — no app, no card. How Plug & Charge actually works, what it demands from chargers and backends, and a realistic view of where it fits alongside RFID and contactless.
How AmpNexus publishes, targets, stages, observes, and safely pauses firmware updates across a fleet of EV charge points—complete with screenshot callouts and API examples.
