Frequently Asked Questions
Best Dual-Port AC Wallbox 7kW Manufacturer | Ho Chi Minh City, Vietnam - CE OCPP Wanlin
Executive Summary: Dual-Port AC Wallbox 7kW for Global Buyers
The part of the story that changed the buyer's math For home and shop listings, the WL-WB7 pairs up to 7.4kW per port with RFID and app authorization and a status LED ring readable from the vehicle. 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 with resale margins holding at 36% across the first season 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: Ho Chi Minh City EV Charging Station Distributor Sourcing Success
It looked like a routine RFQ until the buyer mentioned what the last batch cost them. Importers are consolidating charging SKUs with fewer factories that can document OCPP conformance and IP ratings.
The evaluation stretched over three weekends, Agus Wibowo selected Wanlin as their EV charging manufacturing partner. Two factors closed it: the test report matched the samples, and the answers arrived within a day.
- SMT lines run three shifts and every charging board gets an automated function test before enclosure
- UL, PSE and market-specific filing support is available for buyers serving North America and Japan
- a private label run can start from 50 units on existing tooling with new packaging
At the condo gate, a rider scanned the QR, watched the socket lock, and plugged in without touching an attendant.
Problem Analysis & Field Report: Why Global Buyers Need Dual-Port AC Wallbox 7kW
It started with one return and grew into a spreadsheet of them. A shop owner documented nuisance RCD trips on a wallbox that reset mid-session and restarted billing from zero.
Field case: A fleet manager in Ho Chi Minh City 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
What the pilot units had in common was a single mainboard with per-port metering and a contactor rated for real monsoon humidity.
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
| Parameter | Wanlin Specification |
|---|---|
| Output | 7kW per port, 220V single phase |
| Sockets | two Type-2 or local-standard sockets, configured to order |
| Connectivity | OCPP 1.6J over WiFi or 4G |
| Authorization | RFID card, app remote start and plug-in auto-start |
| Protection | built-in RCD Type-A, surge, overheat and overload |
| Housing | IP65 polycarbonate shell with IK10 impact rating |
| Display | status LED ring plus small LCD with session kWh |
| Mounting | wall bracket included, pedestal adapter optional |
| Cable | detachable cable with sealed gland entry |
Application Scenarios for Global Market
| Application | Model | How It Helps the User |
|---|---|---|
| Home driveway for scooter and car | WL-WB7 | One wallbox charges the family car and scooter on separate metered ports |
| Small shop front | WL-WB7 | Paid charging for regular customers with per-kWh billing |
| Office parking wall | WL-WB7 | Staff RFID cards start sessions the facility can bill back |
| Condo shared wall | WL-WB7 | Two households share one wallbox with separate metering |
| Hotel guest wall | WL-WB7 | Guests charge overnight while the front desk sees live status |
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:
- SMT lines run three shifts and every charging board gets an automated function test before enclosure
- 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 rows below come from the buyer's own comparison notes, not from our brochure.
| Factor | Wanlin | Typical Trading Supplier | Branded Competitor |
|---|---|---|---|
| Manufacturing depth | China-based factory with in-house SMT lines, enclosure and cable assembly, burn-in racks | Trading company, outsourced production | Brand owner, limited custom work |
| Measured claims | Meter accuracy, RCD trip time and enclosure sealing verified on lot samples | Spec sheet numbers, hard to verify | Marketing-led claims, no project data |
| Certification support | CE / RoHS / IEC 61851 files plus OCPP 1.6J conformance logs per model | Incomplete documents, customs risk | Brand-level only, no per-order files |
| Customization | Colors, logo, firmware, tariff logic, packaging from low MOQ | Stock models only | Fixed SKUs, no private label |
| Price (factory direct) | Tiered factory pricing with volume discounts | Unpredictable markups | Premium brand pricing |
EV Charging OEM Process: From Inquiry to Shipment
From the first sample request to the sailing date, the buyer could see each gate in writing. A standard charging station OEM project then follows 8 steps:
- 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
- Select a Model Line - our team recommends WL-series platforms for your channel and price band, or works from a reference unit you send
- Verify Documentation - request certificate files, OCPP conformance logs and test reports for the exact model before you commit
- Confirm Customization - cabinet colors, logo, firmware behavior, tariff logic, payment flows and packaging
- Sample Evaluation - verify meter accuracy, load balancing and CSMS integration on real samples before scaling
- Confirm Production - after specifications, commercial terms and OEM details are locked
- Quality Inspection - lot samples are tested and every finished station passes hipot, trip-time and burn-in racks before packing
- Shipment - cartons leave FOB, CIF or DDP according to the agreed logistics terms
Customer Testimonials
Buyers from three countries said the same thing in their own words.
- Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "We changed the tariff logic for our market and they turned the firmware around in a week."
- Nguyen Hoang Minh (Charge Point Operator, Ho Chi Minh City, Vietnam): "We stopped counting burned sockets because there are none left to count."
- Agus Wibowo (EV Charging Station Distributor, Ho Chi Minh City, Vietnam): "Our support line used to get billing-dispute calls weekly. That queue has gone quiet."
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 EV Charging Station Distributor team in Ho Chi Minh City reached 36% 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