Technology
The hardware is half of the product. The other half is the software that prices, monitors and balances it, and the laboratory that proves both against real vehicles.
Cloud platform
Management system for operators
A central system for charger operators to manage charge points and monitor charging service. Runs in the cloud, so features ship without site visits.
- Status monitor, charge record, prices management, firmware upgrade, remote diagnose, load balance
- Fee pricing strategy; third-party payment via Stripe, PayPal, Nets
- OCPI interoperability with eMSPs / roaming hubs
- Distributor cloud platform management: sub-accounts and merchant accounts, data synchronised with parent accounts
- Smart O&M: real-time monitoring, log analysis, remote OTA
- Operational data analysis with export
- OCPP 1.6 and OCPP 2.0.1 support (platform)
- Whitelabelled solutions
- EN 303 645 IoT security certification with Bureau Veritas (first for EV chargers); IEC TS 62443
- Integration cases: Electromaps, Driivz, Monta, Ampeco, Hubject, SAP, Placetoplug, ev.energy, Move, E-Flux, clever-PV, evVolta
Architecture
Facility → network → cloud → user
Users: operators, maintenance, customer service, supervision; EV owners and rental users via app; government platforms, charging clouds, parking systems via open portal; payment institutions via payment portal.
Mobile app
For the driver
Find a charger, start, monitor and pay from one phone.
- Account sign up by phone number
- Location search
- Real-time monitor
- Cashless payment (credit card, Nets, PayWay, Stripe)
- Auto billing
- PV green energy mode / mixed mode
- Scheduled charging
- Device authorisation for friends and family
- Charging data
Load balancing
Three levels of load management
Protect the household, share the site, respect the grid.
Single charger
When consumption exceeds the contracted limit, the charger's current is restricted to protect the house load.
Multi-charger
Full-Load mode: first come, first charged. Balance mode: power shared evenly across all chargers on the circuit.
Intersite
The station reads consumption of neighbouring loads (e.g. a supermarket) from the grid connection and adjusts its maximum power dynamically.
Solar
PV charging modes
Caro, Caro Pro and Saro integrate with PV systems.
- Green Mode: surplus PV >6A starts charging
- Mix Mode: 0-6A surplus topped up by grid
Security
Certified, not claimed
Beyond hardware safety, software and platform are certified.
- First EV charger manufacturer to achieve ETSI EN 303 645 IoT security certification, with Bureau Veritas
- IEC TS 62443 network security
- Compliant with UK 2023 cybersecurity regulation and the OCPP security white paper
- Hardware: 30 mA Type A + 6 mA DC residual current detection, relay-sticking protection, surge, over/under voltage, frequency and temperature protection
R&D & testing
6,000 m² R&D centre, 3,000 m² test centre
Built to automotive-grade standards with SiL and HiL environments.
- 170+ R&D engineers: product, AC charger, DC charger & power module, software, project, intermediate test, patent unit
- HiL testing up to 720 kW ultra-fast charging
- ISO 15118, OCPP 2.0, CHAdeMO 2.0, DIN 70121 under test
- Real-world testing of EU and JP standard EVs
- Environment, EMC and reliability testing in-house
- Cooperating institutions: UL, Intertek, TÜV Rheinland, DEKRA
- Global test network: Germany, UK, Sweden, Switzerland, Belgium, Jordan, UAE, South Korea, Thailand, South Africa, Shenzhen/Hong Kong
Roadmap
Echo Series V2X (pre-research)
Bidirectional charging & discharging linking EV, PV, storage and grid.
EN Plus's V2X system, based on its AC BOX control technology, manages energy flow between the EV, household loads, solar and the grid. Published targets: operating noise ≤ 40 dB, IP55 / IK10, app + button dual start, automatic off-grid / grid-connected switching, Chinese/European/Japanese standard platform. Status: pre-research — not a commercial product.
Request a platform demo
See the operator dashboard, the app and OCPI roaming with your own use case.