3.5kW portable EV charger with OCPP
The EMS2-35-D is a 3.5 kW portable AC EV charger with OCPP 1.6J over Wi-Fi. It connects to your existing charging management platform for remote start/stop, live session monitoring and billing. Available with Type 2 or GB/T output, IP55 protection, and CE/UKCA certification.
Core Product Parameters
| Model | EMS2-35-D |
| Electric Properties | |
| Input/Output Voltage | 220V |
| Input/Output Current | 16A |
| Rated Power | 3.5kW/7kW/11kW |
| Working Frequency | 50/60Hz |
| Phase | Single Phase |
| Structure Design | |
| Cable Size | 3x2.5+1x0.5mm²/3x6+1x0.5mm²/5x2.5+1x0.5mm² |
| Cable Length | 3M/5M/10M |
| Housing Color | Optional |
| Jacket Material | TPE/TPU |
| Control System | |
| Reserved Time | 0-12H |
| Security Protection | |
| Certification | CE, RoHS |
| Output Connector | GB/T, Type 2 |
| Input Plug | Type 2 |
| Waterproof Grade | IP55 |
| Working Temperature | ﹣20℃-﹢50℃ |
Core selling points
OCPP support is the main reason this charger exists
Most portable chargers are stand-alone units with no back-end connection. The EMS2-35-D can be added to a management platform, so an operator can see charging power, energy consumption, and session duration in real time. If a driver calls about a failed session, the operator can check the data remotely instead of sending someone to the site.
Remote start and stop work through the platform
The operator can authorize a charge with a QR code, RFID card, or mobile app, and the system handles billing and account reconciliation automatically. This is useful for roadside assistance companies that charge customers after the fact, or for fleet managers who need to track which driver used which charger.
Multiple chargers can be managed from one dashboard
If a business has portable chargers spread across different service vans or temporary sites, the OCPP connection allows load balancing and peak-shifting across the group. The operator can also push firmware updates remotely instead of collecting each unit.
The charger is compatible with mainstream Chinese EV brands
It covers the full lineup of BYD, NIO, XPeng, Li Auto, Zeekr, Neta, Leapmotor, GAC AION, Geometry, Rising Auto, MG, ORA, Voyah, AITO, Deepal, Wuling, Chery, Changan, Geely, and Hycan. For distributors selling into markets with Chinese EVs, this reduces compatibility questions.
Cable and connector options are flexible for bulk orders
Cable sizes include 3×2.5+1×0.5mm², 3×6+1×0.5mm², and 5×2.5+1×0.5mm². Lengths are 3m, 5m, or 10m. Housing color can be customized, and mixed connector orders are accepted in one container.
Certifications cover the major markets
TÜV SÜD, CE, FCC, COC, RoHS, and UKCA are included, which simplifies customs clearance and retail listing in Europe, the UK, and other regions.
Use Case: Roadside Assistance in Germany
A roadside assistance company in Germany equips its service vans with the EMS2-35-D 3.5 kW portable EV charger with OCPP. When a customer's EV runs out of charge on the motorway, the technician connects the charger to an approved power point using the correct input plug configuration and starts a session.
The OCPP connection sends session data back to the dispatch office. The office can see how much energy was delivered and bill the customer automatically. It can also start or stop the charge remotely if the customer decides to wait for a tow truck instead. The technician does not need to handle payment or paperwork on the roadside.
FAQ
Q: Can the charger connect to a management platform that is not from the same vendor?
A: Yes. The OCPP protocol is an open standard, so the charger can connect to any OCPP-compliant platform. The operator needs to provide the server URL and credentials, and the charger will report session data to that platform.
Q: Does the OCPP connection work over WiFi or does it need a SIM card?
A: The charger supports WiFi for OCPP communication. A 4G module is not included by default. If the charger is used in a location without WiFi, a separate 4G router or mobile hotspot can be used.
Q: What happens to a charging session if the OCPP connection drops?
A: The charger continues charging. When the connection is restored, it uploads the session data to the platform. The operator can still stop the session locally using the charger's buttons.
Q: Can the operator set different tariffs for different users?
A: Yes, if the management platform supports it. The charger sends the session data to the platform, and the platform applies the tariff based on the user account or RFID card. The charger itself does not store tariff information.
Q: Are the TÜV SÜD and UKCA certificates valid for retail sales in the UK and EU?
A: Yes. The TÜV SÜD and UKCA certificates cover the relevant safety and electromagnetic compatibility requirements for the UK and EU markets. The CE marking is also included for EU customs clearance.
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