Frequently Asked Questions
Best Tap-and-Charge RFID EV Charger Manufacturer | Da Nang, Vietnam - CE OCPP Wanlin
Executive Summary: Tap-and-Charge RFID EV Charger for Global Buyers
The short version For housing and fleet sites, the WL-RF8 pairs 8 metered sockets with time-of-day tariff rules and roaming-ready card exports. 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. What the field data showed and the landed margin landed at 36% after freight and duties 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: Da Nang Delivery Fleet Manager Sourcing Success
The request that opened the account was a fault report, not a purchase order. Across the market, most charging complaints trace back to unmetered sockets, flat-rate billing and boards with no overload protection.
After the operator's own four-week load-balance logging test, Le Thi Kim Anh selected Wanlin as their EV charging manufacturing partner. What closed the deal was not the unit price but the OCPP conformance log in the appendix.
- SMT lines run three shifts and every charging board gets an automated function test before enclosure
- RCD, surge and overload protection are function-tested on samples from every lot, not by design alone
- 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 Tap-and-Charge RFID EV Charger
The failure was intermittent, which made it expensive to ignore. A fleet yard operator documented charging losses after drivers swapped cards and the board logged nothing.
Field case: A social housing tower in Da Nang deployed the WL-RF8 after taped-over keyed sockets created a fire risk. RFID access plus per-socket metering closed the audit gap, and the housing authority copied the setup to three more towers.
Why it matters for global buyers:
- shared punch cards and keyed sockets defeat any charging audit
- the fix was a card-per-rider local list with offline authorization
- logs must queue and upload after outages, not vanish
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 Tap-and-Charge RFID EV Charger
Inside, the board layout keeps the 4G radio away from the contactor coil so sessions stay online when ports switch.
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 |
|---|---|
| Authorization | MIFARE RFID with a 10,000-card local list |
| Offline Mode | full offline authorization with queued session logging |
| Ports | 8 metered sockets per cabinet |
| Roaming | card ID export for multi-operator roaming schemes |
| Connectivity | OCPP 1.6J over 4G |
| Tariff Engine | time-of-day and tiered kWh tariff rules |
| Display | LCD with card balance and port status |
| Protection | per-port overload, leakage and surge |
| Housing | IP54 steel cabinet with IK10 panel |
Application Scenarios for Global Market
| Application | Model | How It Helps the User |
|---|---|---|
| Staff housing block | WL-RF8 | Each worker charges on a personal card the landlord can audit |
| University dormitory | WL-RF8 | Dorm cards double as charging cards with quota limits |
| Fleet yard with driver cards | WL-RF8 | Every session ties to a driver ID for cost reporting |
| Social housing tower | WL-RF8 | Card access stops unauthorized corridor charging |
| Factory canteen wall | WL-RF8 | Shift workers charge during meals with tiered daytime rates |
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
- RCD, surge and overload protection are function-tested on samples from every lot, not by design alone
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
Put side by side with the alternatives the buyer had been using, the difference showed up in test time, not just features.
| 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
Sourcing teams like the process because each gate has a deliverable and a date. 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
The quotes below come from follow-up calls after the first season of uptime data arrived.
- Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "The cabinet survived a monsoon season on an open shed wall. That story sold more units than our ads did."
- Nguyen Hoang Minh (Charge Point Operator, Ho Chi Minh City, Vietnam): "I have bought from four factories in this category. This is the first one whose meter readings matched the utility bill."
- Le Thi Kim Anh (Delivery Fleet Manager, Da Nang, Vietnam): "The first 60 stations sold out in a month and the repeat order came before the first container cleared customs."
Frequently Asked Questions
Q: How many cards can the WL-RF8 hold?
A: A 10,000-card local list runs offline, and lists sync from the CSMS when connected.
Q: What happens when the network drops?
A: Cards still authorize from the local list, sessions log to memory and upload on reconnection.
Q: Can one card work across our sites?
A: Yes, card IDs export in standard formats so operators can run shared or roaming schemes.
Q: Can we limit charging per card?
A: Yes, daily kWh or session quotas apply per card in the tariff engine.
Q: Does it still take QR payment for visitors?
A: Yes, QR wallet payment runs alongside card access on the same ports.
Project Summary
What the field data showed By working directly with manufacturer Wanlin, the Delivery Fleet Manager team in Da Nang 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