20kW Compact DC Charger
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Select power from the operating scenario
A fleet depot with overnight parking, a fuel station, a taxi hub and a highway corridor have different charging patterns. Estimate vehicles per day, battery size, arrival state of charge, target dwell time, simultaneous sessions and future expansion. A lower-power distributed layout may suit some fleets, while higher-power dispensers may suit short-stop sites. The power schedule should be tested against the actual vehicle mix and site demand.
Confirm output and connector compatibility
Provide the vehicle voltage window, maximum current, connector standard and number of charging outputs. CCS2, GB/T, CHAdeMO or other interfaces should be listed only where the selected model and destination configuration are documented. For dual-output equipment, clarify whether power is shared or independently allocated. Cable length, cable management and accessibility should also be included in the site specification.
Check grid and transformer capacity
The charger load must be coordinated with the available utility supply, transformer, switchgear, protection, cable route and demand-management strategy. Provide the site voltage, fault level where available, existing maximum demand and planned number of chargers. Weak-grid or constrained sites may require staged deployment, dynamic load management or an energy-storage study. These options should be evaluated by the project’s qualified electrical team.
Define backend, OCPP and payment
OCPP availability depends on the selected model, firmware and CSMS. State the required OCPP version, authentication method, tariff logic, local payment channels, networking, remote diagnostics, OTA policy and reporting. Request model- and firmware-specific interoperability evidence or certification where required. Payment and backend functions must also be checked for the target country.
Design for the environment and service
High ambient temperature, dust, rain, coastal exposure, altitude and local service capability can affect equipment selection and site layout. Ask for the model-specific IP and IK ratings, cooling method, operating range, noise, maintenance access and spare-parts plan. Shelter, drainage, bollards, lighting, signage and cable protection should be addressed in the civil and electrical design.
Review safety and certification documents
Certification and standard coverage vary by charger model and destination. Request the exact certificate or report number, covered models, standard edition, directives and validity. Existing CE-related evidence must not be extended to unlisted models or treated as proof of OCPP, connector, payment or backend functionality. Installation approval remains subject to local authorities and the project design.
Send a DC charging project brief
Provide site country, application, vehicle list, sessions per day, target dwell time, power level, site supply, transformer data, connector mix, number of outputs, OCPP/CSMS, payment, networking, environment, certification needs, installation schedule and quantity. LONTEN can use this brief to identify suitable models for document review and list the remaining technical questions.