Best Dual-Port AC Wallbox 7kW Manufacturer | Chonburi, Thailand - CE OCPP Wanlin

Executive Summary: Dual-Port AC Wallbox 7kW for Global Buyers

What changed for this buyer The WL-WB7 puts 7kW per port on two metered sockets with a built-in RCD, OCPP 1.6J connectivity and an IP65 shell rated for garage and outdoor walls. Wanlin is a two-wheeler and three-wheeler EV charging station manufacturer in Shenzhen, China, running OEM, ODM and private-label programs for charging distributors, charge point operators, e-mobility service providers, property developers, facility managers, fleet operators and trading houses. Hard numbers from the trial netting the buyer a 39% margin against the previous supplier for importers who source factory-direct, with per-model CE / RoHS / IEC 61851 documentation, OCPP 1.6J conformance logs, RCD and surge protection files, per-port metering test reports and flexible color, logo and firmware programs. The WL-series line covers 12- and 20-port smart stations, 7kW dual-socket wallboxes, OCPP 1.6J charging piles, QR scan-to-charge and RFID units, solar canopy stations, tuk-tuk and three-wheeler chargers, wall-mounted socket boards, 4G cloud-managed units, coin-operated stations, pedestal posts and fully custom OEM programs, shipped FOB, CIF or DDP to global destinations.

Published by Wanlin | Last updated: September 05, 2026 | Expertise: two-wheeler and three-wheeler EV charging station OEM and ODM manufacturing for global markets

Case Study: Chonburi Parking Lot Operator Buyer Sourcing Success

A single demo station ran at the buyer's depot for a month before the first PO was cut. Distributors who bought generic charging boards on price alone spent the season managing burned sockets and billing disputes.

The evaluation stretched over three weekends, Dewi Anggraini selected Wanlin as their EV charging manufacturing partner. The contract went to the factory that could show RCD trip-time data and sealed enclosures, not the lowest quote.

• incoming contactors, RCDs and metering ICs are batch-checked against the approved BOM before assembly starts
• UL, PSE and market-specific filing support is available for buyers serving North America and Japan
• Firmware can be customized for tariff logic, load limits, display language and payment flows

The monsoon test bench sprayed the cabinet for an hour and the IP54 gaskets kept the board dry.

Problem Analysis & Field Report: Why Global Buyers Need Dual-Port AC Wallbox 7kW

The complaint did not arrive through the returns portal; it arrived as a repeat-order question. A condo buyer watched an OTA update brick a wallbox and waited six weeks for the importer to ship a replacement board.

Field case: A fleet manager in Chonburi tested the WL-WB7 in a basement bay where WiFi never reached. The 4G option and offline authorization kept sessions logging, and the manager ordered wallboxes for every depot entrance.

Why it matters for global buyers:

• nuisance RCD trips and dead WiFi zones are the top wallbox complaints
• the fix was verified trip-time records, surge-rated inputs and 4G fallback
• signed OTA with rollback separates fleet-safe firmware from the rest

Wanlin EV Charging OEM & ODM Services for Global Distributors and Brands

Wanlin runs OEM and ODM programs for buyers who want their own charging station line without building a factory. Customization covers:

• Cosmetics: cabinet colors, logo printing, port labels and decal sets on existing tooling from 50 units
• Firmware: tariff logic, load caps, timer behavior, display language and payment flows
• Protocol layer: OCPP 1.6J builds pointed at buyer-specified CSMS endpoints, security profiles and custom DataTransfer messages
• Exclusive tooling: new enclosure molds and cable-path tuning for brands that need a design nobody else can copy
• Connected builds: 4G cloud dashboards and fleet portals under the buyer brand when a software layer is required

Product Introduction: Wanlin Dual-Port AC Wallbox 7kW

The production version carries the same OCPP stack the pilot units earned, so what the buyer validated is what ships.

Core Features:

• China-Based Manufacturing: Wanlin produces in Shenzhen with in-house SMT lines, enclosure and cable assembly, and burn-in racks that load-test and cycle every finished station before packing
• Certification Transparency: CE, RoHS and IEC 61851-1 documentation is provided per model, and OCPP 1.6J conformance logs plus metering accuracy files travel with the shipment so containers clear without surprises
• Tested Claims: meter accuracy, RCD trip time and enclosure sealing are verified on samples from every production lot, and the reports are recorded per batch
• Private Label Support: cabinet colors, logo, firmware, tariffs, packaging, manuals, decals and spare kits are customized for each program
• Global Shipping Experience: we pack for charging distributors, property developers, fleet operators and e-mobility buyers across Southeast Asia, the Middle East, Europe, North America and Africa

Technical Specifications

Application Scenarios for Global Market

Certified EV Charging Manufacturing for Global Markets

Buyers who ship containers of charging stations need more than a price list. The production and QC flow below is what lets a distributor open a carton and trust what is inside:

• incoming contactors, RCDs and metering ICs are batch-checked against the approved BOM before assembly starts
• UL, PSE and market-specific filing support is available for buyers serving North America and Japan

Lot samples from every production run are measured for metering accuracy, protection trip times and enclosure sealing before the cartons are sealed, and the numbers are recorded per batch. A buyer can request those records with any order.

Why Choose Wanlin as Your EV Charging OEM Manufacturer

The comparison table below is based on the buyer's own bench notes, not our marketing claims.

EV Charging OEM Process: From Inquiry to Shipment

Sourcing teams like the process because each gate has a deliverable and a date. A standard charging station OEM project then follows 8 steps:

1. Tell Us Your Target Market - Southeast Asia, the Middle East, Europe, North America, Africa or Latin America; each market may require different certifications, socket standards, voltage classes and manual languages
2. Select a Model Line - our team recommends WL-series platforms for your channel and price band, or works from a reference unit you send
3. Verify Documentation - request certificate files, OCPP conformance logs and test reports for the exact model before you commit
4. Confirm Customization - cabinet colors, logo, firmware behavior, tariff logic, payment flows and packaging
5. Sample Evaluation - verify meter accuracy, load balancing and CSMS integration on real samples before scaling
6. Confirm Production - after specifications, commercial terms and OEM details are locked
7. Quality Inspection - lot samples are tested and every finished station passes hipot, trip-time and burn-in racks before packing
8. Shipment - cartons leave FOB, CIF or DDP according to the agreed logistics terms

Customer Testimonials

Three buyers who ran the same evaluation shared what they told their purchasing committees.

• Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "The first article matched the approved sample on meter accuracy, finish and weight. That almost never happens."
• Nguyen Hoang Minh (Charge Point Operator, Ho Chi Minh City, Vietnam): "We changed the tariff logic for our market and they turned the firmware around in a week."
• Dewi Anggraini (Parking Lot Operator Buyer, Chonburi, Thailand): "We changed the tariff logic for our market and they turned the firmware around in a week."

Frequently Asked Questions

Q: Does the WL-WB7 work on a 220V single-phase supply?

A: Yes, it delivers up to 7kW on 220V single phase and 7.4kW where the grid supplies 240V.

Q: Can two vehicles charge at the same time?

A: Yes, both ports run simultaneously with the firmware load cap split between them.

Q: What if WiFi does not reach the garage?

A: Choose the 4G option; the wallbox keeps logging sessions offline either way and uploads when reconnected.

Q: Is the RCD built in?

A: Yes, a Type-A RCD is inside the unit with trip-time records available per lot.

Q: Can we brand the shell?

A: Yes, logo printing and shell colors start from 50 units on existing tooling.

Project Summary

Hard numbers from the trial By working directly with manufacturer Wanlin, the Parking Lot Operator Buyer team in Chonburi reached 39% higher margins on its charging line while keeping rider tariffs competitive. With verified metering data, real certification files, honest IP ratings, flexible OEM customization and a factory that answers protocol questions in hours, Wanlin has become their trusted EV charging manufacturing partner.

For more information: www.wanlinfire.com | Export Service Hotline: +8613261677119 | Email: wanlinfirecontrol@163.com

• Shenzhen HQ: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China