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OCPP Compliant · Always-On · Payment Secure

An offline charge point
isn't just inconvenient. It's lost revenue, every minute.

Zentari keeps every charge point online, every payment terminal transacting, and every OCPP session completing — with multi-network resilience that covers the locations where single-carrier SIMs routinely fail.

The Real Cost of Downtime

Every offline charger has a number attached to it.

CPOs report that connectivity issues — not hardware faults — account for the majority of charge point downtime incidents. A SIM that loses signal in an underground car park or a rural motorway service doesn't just frustrate drivers. It stops the OCPP heartbeat, breaks the payment flow, and starts a clock on lost session revenue that continues until an engineer makes a site visit to diagnose what a remote SIM command could have fixed in seconds.

Multi-network resilience removes the connectivity single point of failure. Watchdog monitoring means your NOC team sees a degrading connection before it drops entirely. Fixed IP addressing means they can act on it without leaving the office.

Motorway Service Rapid Charger
150kW DC rapid · avg. 4 sessions/hr
£18–32
lost per hour offline
£430+
if down for a full day
Urban Car Park 22kW AC Charger
22kW AC · avg. 2 sessions/hr peak
£6–12
lost per hour offline
£140+
if down for a full day
Destination / Retail Site (×10 chargers)
7kW–22kW AC · high dwell time
£40–80
lost per hour across site
£600+
if down for a full day

Estimates based on industry average session revenue and typical utilisation rates. Actual figures vary by tariff and location.

Deployment Environments

Where single-network SIMs fail. Where Zentari doesn't.

Underground car park
Coverage challenge

Underground Car Parks

Basement and multi-storey car parks attenuate all cellular signals — but rarely equally across all carriers. A SIM locked to one network goes dark while another carrier still has a usable signal on a different frequency band. Zentari automatically roams to whichever network penetrates the structure.

Multi-network resilience keeps OCPP heartbeat alive
Motorway services
Revenue critical

Motorway Services

High-value rapid chargers at motorway services are revenue engines — but they sit in locations with variable network quality depending on which carrier has invested most heavily at that junction. Fast failover between networks is essential to maintaining the contactless payment flow and rapid session turnaround.

Fixed IP + private APN keeps payment terminal secure
Workplace charging
Managed fleet

Workplace & Fleet Depots

Fleet depots and workplace charge points serve a predictable number of vehicles on a schedule. Load management via OCPP requires a continuous, low-latency connection to the CPMS. Pool data across the whole site estate so high-traffic depot hubs are offset by quieter workplace installations.

Pooled data + Watchdog keeps site costs predictable
Retail destination charging
High scale

Retail & Destination

Supermarkets, retail parks and hotel sites deploy tens of chargers across a single location. JIT SIM activation lets you install hardware across the whole site before you pay a penny — activate each unit via API the moment commissioning is complete, and manage the entire site estate from one dashboard entry.

JIT provisioning — zero idle cost during shopfit
Built for Charge Point Operators

Fits your rollout process. From first site to thousandth charger.

Order & Stock

Bulk order unactivated SIMs. Ship them pre-loaded in hardware to every site. No charges until a SIM goes live.

Install & Commission

Installer fits the hardware. On commissioning day, activate the SIM via the Axis Portal or a single API call from your CPMS.

Monitor & Manage

30-minute usage polling flags connectivity changes. Watchdog rules auto-suspend on thresholds. Fixed IP enables remote reboot without a site visit.

Decommission & Reuse

Suspend a SIM when a charger is taken offline for maintenance or replacement. Reactivate on the same or a new device — no new SIM order needed.

PCI DSS Payment Routing

Route payment terminal traffic via private APN. Card data never crosses public internet infrastructure — this can simplify your PCI DSS scope. Contact us to discuss your specific payment routing requirements.

Fixed IP for OCPP Management

Assign a static IP to every charge point for direct OCPP communication with your CPMS. Remote firmware updates, configuration pushes and diagnostics without dispatching an engineer.

REST API for CPMS Integration

Trigger SIM activation when a new charger registers in your CPMS. Suspend automatically on decommission. Every portal action is available as an API endpoint — no manual steps for your ops team.

Global network connectivity

Ready to keep every charger earning?

Join charge point operators across the UK who have replaced unreliable single-network SIMs with a resilient, fully managed connectivity platform built for CPO scale.

Get in Touch Today