EV Charger Manufacturer FAQ for AC/DC Projects
28 answers covering products, ordering, logistics and after-sales - reviewed July 2026.
Buyer Shortcut
Short answer for AC/DC EV charger RFQs
For AC/DC EV charger sourcing, the most useful FAQ answer depends on site type, charger power, connector standard, OCPP/CSMS, payment method, certificate target, quantity and OEM scope. If you are comparing suppliers, send these details first; SUNFULL can then reply with the correct model path, datasheet, compliance notes and pricing scope instead of a generic catalog answer.
For AC wallbox
7kW / 11kW / 22kW, connector, OCPP/RFID/app, model-specific files, sample and OEM scope.
For DC fast charger
60kW / 120kW / 150kW / 180kW+, CCS2/CCS1/GB/T, payment, OCPP and site power.
For OEM orders
Logo, label, packing, manual language, firmware notes, MOQ, sample timeline and certificate files.
Products & Specifications
What is the difference between AC and DC charging?
AC chargers use the vehicle's onboard charger and are commonly selected for homes, hotels, workplaces and longer dwell times. DC fast chargers feed controlled DC power to the battery and are used for fleets, public charging and highway sites. Actual charging speed depends on the vehicle charging curve, state of charge, temperature and site power, not only the charger nameplate rating.
Which connector standards can be quoted?
Connector scope is confirmed by model and destination market. Typical project reviews include Type 2 for AC and CCS2 or GB/T for DC; CCS1, CHAdeMO, cable length and plug-and-charge functions require exact model confirmation. Request the connector drawing, rated current and applicable IEC or market document before order.
What OCPP versions and CSMS platforms are supported?
Networked models can be configured for OCPP 1.6J or OCPP 2.0.1 depending on the selected product and firmware. Before batch approval, identify the target CSMS, security profile, required messages, smart-charging functions and remote-operation scope, then complete an interoperability test against that environment.
Can a hybrid inverter work with third-party batteries?
Compatibility depends on the exact inverter, battery voltage window, current limit, BMS protocol and approved firmware combination. Provide the battery model and CAN or RS485 protocol information for engineering review. Do not assume that physical connection alone establishes performance, safety or warranty compatibility.
What is the maximum DC fast charger power available?
Available output is confirmed from the current model catalog after reviewing grid capacity, vehicle mix, connector count, load-sharing logic, ambient derating and cable-cooling requirements. Ask for the exact model datasheet and output curve instead of selecting only by a headline power value.
How should buyers specify chargers for tropical, coastal or desert sites?
Provide the expected ambient range, humidity, altitude, dust, salt exposure, solar load and installation method. The quotation should identify the selected model's operating range, IP and IK rating, derating curve, corrosion protection, cooling design and maintenance interval.
Do you support V2G or V2H projects?
V2G and V2H feasibility depends on the exact vehicle, connector, bidirectional power stage, ISO 15118 scope, CSMS or EMS, metering and local grid approval. Request model-specific evidence and a defined test plan; a public pilot announcement is not proof that a supplier delivered the relevant equipment.
Orders, Pricing & Payment
What is the minimum order quantity (MOQ)?
MOQ varies by product, configuration, branding depth, tooling requirement and current production plan. Ask for separate terms for an evaluation unit, a standard production order and any OEM or ODM version. The valid quantity and price should appear in the current quotation or pro-forma invoice.
How is lead time confirmed?
Lead time is quoted after the exact model, quantity, options, document scope, sample approval requirement and production schedule are known. Separate engineering or approval time from manufacturing and transport time, and use the delivery commitment stated in the signed order documents.
What payment terms are available?
Payment currency, method, deposit, balance trigger, bank beneficiary, documentary requirement and any platform transaction terms are confirmed in the current quotation, pro-forma invoice and contract. Buyers should verify that the beneficiary and company details match the signed transaction documents before payment.
Can I evaluate a sample before a production order?
Sample or evaluation-unit availability depends on the selected model and current stock or production plan. Confirm sample price, configuration, included accessories, documentation, test support, freight, import responsibility and whether any later credit is written into the quotation.
What can OEM and ODM customization include?
OEM or ODM scope may include labels, packaging, manuals, enclosure details, user interface, firmware, communications and CSMS requirements. Feasibility, intellectual-property ownership, tooling, approval samples, MOQ, certification impact, fees and change control must be confirmed after technical review.
How is distributor exclusivity evaluated?
Any exclusive territory should be negotiated separately after both parties define product scope, market, duration, sales commitments, marketing duties, service capability, performance review and termination terms. A general website enquiry does not create an exclusive appointment.
Shipping, Customs & Logistics
Which Incoterms can be quoted?
The available Incoterm and named place depend on product type, destination, shipment size and the forwarder route. Confirm the exact Incoterms edition, named port or place, export packing, insurance, destination charges, customs responsibility and last-mile scope in the quotation.
How are chargers and batteries packed for export?
Packing is selected by product dimensions, fragility, transport mode and destination requirements. For batteries, request model-specific UN 38.3 evidence, safety data, packing information and the forwarder's dangerous-goods acceptance requirements before shipment. The final packing list and package marks should match the order.
Who handles customs clearance at destination?
Responsibility follows the agreed Incoterm and local import rules. Confirm the importer of record, tariff classification, taxes, permits, broker, destination inspection and last-mile delivery before shipment. Supplier documents support clearance but do not replace the importer's legal responsibility.
How should transit time be estimated?
Use a current forwarder quotation for the origin, destination, product type and shipping date. Separate factory completion, export handling, sailing or air transit, transshipment, customs and inland delivery, and allow for route changes or dangerous-goods booking constraints.
Which HS code applies to the product?
HS classification depends on the product configuration and destination customs interpretation. The supplier can provide technical descriptions, datasheets, invoices, packing lists and battery documents, while the importer and customs broker should confirm the final code and duty treatment.
Certification & Compliance
Which certification files are available?
Documentation varies by exact model, voltage, connector and configuration. Charger projects may review CE LVD and EMC files plus IEC 61851 and IEC 62196 test scope; inverters and embedded-generation systems use separate grid-interface requirements. Request the document title, issuer, model list, standard edition and validity before quotation.
Can a DC charger be used in an AFIR-aligned EU project?
AFIR obligations are assessed at deployed infrastructure and operator level, not issued as a standalone charger certificate. SUNFULL can quote connector, payment-terminal and OCPP options, while the buyer and operator confirm ad-hoc payment, price display, data, accessibility and national implementation requirements for the complete site.
Can country-specific testing or approval be arranged?
SUNFULL can review model documentation and third-party testing enquiries for OEM or ODM projects. Laboratory, notified-body, applicant, importer and local approval scope must be quoted after the exact model, configuration, market and responsible party are confirmed. Cost and timing depend on the project.
How should battery transport and safety documents be checked?
Ask for the exact battery model's UN 38.3 test summary, safety data sheet, packing information and any IEC 62619 report required by the application. Confirm that model numbers, capacity, cell configuration and manufacturer details match the ordered battery; do not rely on a blanket product-family claim.
Warranty & After-Sales Support
What warranty period applies?
Warranty duration, start date, covered parts, exclusions, labour, freight and remedy vary by model and contract. Confirm these terms in the quotation and warranty document for the exact configuration instead of relying on a general product-category statement.
How are warranty claims reviewed?
A useful claim package normally includes the serial number, order reference, site conditions, photos or video, alarm codes, event logs and troubleshooting already completed. Remote diagnosis, parts shipment, return authorization, labour and transport responsibility then follow the agreed warranty procedure.
Are spare parts available?
Spare-parts scope is confirmed by model, installed quantity and service target. Ask for a recommended commissioning and maintenance list, unit prices, lead times, storage conditions, compatibility controls and any long-term supply commitment that must be written into the contract.
What technical support is available?
Technical support depends on the product and contract. Networked models may support remote diagnostics; response windows, languages, firmware access, escalation path, spare parts and any on-site responsibility are confirmed in the quotation.
Can installer or technician training be arranged?
Training may cover installation checks, commissioning, configuration, OCPP integration, routine maintenance and fault isolation for the selected product. Format, language, participant level, schedule, travel, materials and cost are confirmed by project.
Can extended warranty or a service agreement be quoted?
Extended warranty or service scope can be reviewed for the selected model and market. Define preventive maintenance, remote support, response target, on-site coverage, spare-parts stock, exclusions, price and term in a separate written proposal.
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