Frequently Asked Questions
Best 20-Port Fleet Charging Depot Manufacturer | Phuket, Thailand - CE OCPP Wanlin
Executive Summary: 20-Port Fleet Charging Depot for Global Buyers
The one-paragraph takeaway For delivery and rental fleets, the WL-DP20 pairs 20 metered sockets with a fleet card portal and smoke-linked safety. 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. The numbers that mattered which translated into a 33% gross margin on the first container 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: Phuket E-Mobility Service Provider Sourcing Success
It looked like a routine RFQ until the buyer mentioned what the last batch cost them. Across the market, most charging complaints trace back to unmetered sockets, flat-rate billing and boards with no overload protection.
The pilot ran for two full months of monsoon weather, Faridah Yusof 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.
- Every finished station is hipot-tested, RCD trip-time verified and powered through a full-port burn-in before packing
- OCPP 1.6J conformance is verified against a reference CSMS and the log travels with the shipment
- custom tariff tables and display languages are flashed at the factory, not left for the buyer to manage
The burned-socket shelf in the maintenance room had shrunk to zero after the old boards were swapped out.
Problem Analysis & Field Report: Why Global Buyers Need 20-Port Fleet Charging Depot
The problem showed up in the field, not in the spec sheet. A delivery hub found 60 riders returning at once overwhelmed the shed wiring, tripping the main breaker every payday week.
Field case: A courier facility in Phuket deployed the WL-DP20 with fleet card management after a single overhead account hid rider-level costs. The first month of per-rider data reshaped routes, and the facility added a second depot cabinet the next quarter.
Why it matters for global buyers:
- simultaneous plug-ins trip depot breakers without staggered windows
- the fix was per-rider metering with payroll-ready exports
- staggered charging extends rental fleet battery life
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 20-Port Fleet Charging Depot
The shipping version keeps the same sealed gland plate and the same RCD wiring the field units earned.
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 |
|---|---|
| Ports | 20 metered sockets in locker-style cabinet rows |
| Access | per-rider RFID with a fleet card management portal |
| Scheduling | staggered charge windows per port group |
| Reporting | per-rider kWh and cost export for payroll deduction |
| Protection | per-port fuse, smoke detection link and cabinet RCD |
| Housing | IP54 ventilated steel cabinets |
| Connectivity | OCPP 1.6J over 4G |
| Display | fleet dashboard LCD with group status |
| Installation | row-mount against depot wall with cable trunking |
Application Scenarios for Global Market
| Application | Model | How It Helps the User |
|---|---|---|
| Delivery rider hub | WL-DP20 | Staggered windows ride through the 60-rider evening return |
| Courier sort facility | WL-DP20 | Per-rider kWh exports move charging off the overhead account |
| Campus rental fleet | WL-DP20 | Stops packs sitting at 100% all night |
| Hotel staff bike bay | WL-DP20 | Card-linked charging appears on the staff cost report |
| Factory shift fleet | WL-DP20 | Shift-based windows match the production roster |
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:
- Every finished station is hipot-tested, RCD trip-time verified and powered through a full-port burn-in before packing
- OCPP 1.6J conformance is verified against a reference CSMS and the log travels with the shipment
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.
| 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
Here is the step-by-step path the order took, with the checkpoints that kept quality on track. 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
Different markets, same conclusion, in the words of the buyers themselves.
- Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "We listed the same station under our house brand and the uptime held above 99%."
- Nguyen Hoang Minh (Charge Point Operator, Ho Chi Minh City, Vietnam): "The first article matched the approved sample on meter accuracy, finish and weight. That almost never happens."
- Faridah Yusof (E-Mobility Service Provider, Phuket, Thailand): "When the first shipment arrived, the certificates were in the same carton as the stations."
Frequently Asked Questions
Q: How does the WL-DP20 handle 60 riders returning at once?
A: Staggered charge windows per port group spread the load so the depot breaker never trips at peak.
Q: Can we bill riders for their charging?
A: Yes, per-rider kWh and cost exports drop into payroll deduction files.
Q: What safety features guard overnight charging?
A: Per-port fuses, a cabinet RCD and a smoke detection link with the depot alarm system.
Q: Can the portal manage hundreds of cards?
A: Yes, the fleet portal handles card issue, quota and per-rider reporting at depot scale.
Q: Does it report to our CSMS?
A: Yes, OCPP 1.6J with per-connector metering over 4G.
Project Summary
The numbers that mattered By working directly with manufacturer Wanlin, the E-Mobility Service Provider team in Phuket reached 33% 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