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Best OEM ODM Custom Charging Development Service Manufacturer | Medan, Indonesia - CE OCPP Wanlin

Executive Summary: OEM ODM Custom Charging Development Service for Global Buyers

The one-paragraph takeaway The WL-ODM Series platform builds custom charging stations from 3.3kW sockets to 20-port stations, with samples in 15 days and mass production in 30 to 45 days. 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 test actually measured which left a 36% margin after the first sell-through cycle cleared 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

Best OEM ODM Custom Charging Development Service Manufacturer | Medan, Indonesia - CE OCPP Wanlin

Case Study: Medan Energy Solutions Trading Company Buyer Sourcing Success

The buyer had already shortlisted three factories before this conversation started. Distributors who bought generic charging boards on price alone spent the season managing burned sockets and billing disputes.

Once the field units logged 5,000 charging sessions, Pham Duc Long selected Wanlin as their EV charging manufacturing partner. The order followed, but only after the buyer verified three things on the bench.

  • every station completes a scripted OCPP session test against a live CSMS before it is boxed
  • 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 OEM ODM Custom Charging Development Service

The failure was intermittent, which made it expensive to ignore. A startup found its factory partner could not produce an OCPP conformance log for the custom firmware the brand had paid to develop.

Field case: An importer in Medan audited the Wanlin ODM flow after a customs scare with recycled certificate numbers elsewhere. Exclusive tooling, per-SKU test reports and seal-test records closed the audit, and the importer moved three lines over in one season.

Why it matters for global buyers:

  • metering accuracy claims must survive third-party measurement on custom runs
  • custom firmware needs its own conformance evidence, not a borrowed one
  • seal tests on pilot and production batches keep IP claims honest

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 OEM ODM Custom Charging Development Service

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

ParameterWanlin Specification
PlatformWL-series AC platforms from 3.3kW sockets to 20-port stations
Custom Optionsenclosure tooling, port count, socket standards, firmware and payment flows
MOQ50 units on existing tooling, 300 units for new enclosure molds
Lead Timesamples in 15 days, mass production 30-45 days
CertificationCE / RoHS / IEC 61851 per model plus market-specific requests
Testingmeter accuracy, RCD trip time, IP sealing and OCPP conformance per lot
Brandinglogo, cabinet colors, decals, manuals and portal branding
Supportdedicated engineer per project with schematic and firmware sign-off

Application Scenarios for Global Market

ApplicationModelHow It Helps the User
Brand launching a charging lineWL-ODM SeriesStart from the WL platform and market it as your own model range
Utility tender programWL-ODM SeriesConformance logs and per-lot test files fit tender documentation
Distributor regional exclusivityWL-ODM SeriesTerritory-locked models with agreed price floors
E-mobility startupWL-ODM SeriesCustom firmware features rivals cannot copy
Government pilot projectWL-ODM SeriesLocal-language displays and reporting built to spec

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 station completes a scripted OCPP session test against a live CSMS before it is boxed
  • 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 rows below come from the buyer's own comparison notes, not from our brochure.

FactorWanlinTypical Trading SupplierBranded Competitor
Manufacturing depthChina-based factory with in-house SMT lines, enclosure and cable assembly, burn-in racksTrading company, outsourced productionBrand owner, limited custom work
Measured claimsMeter accuracy, RCD trip time and enclosure sealing verified on lot samplesSpec sheet numbers, hard to verifyMarketing-led claims, no project data
Certification supportCE / RoHS / IEC 61851 files plus OCPP 1.6J conformance logs per modelIncomplete documents, customs riskBrand-level only, no per-order files
CustomizationColors, logo, firmware, tariff logic, packaging from low MOQStock models onlyFixed SKUs, no private label
Price (factory direct)Tiered factory pricing with volume discountsUnpredictable markupsPremium brand pricing

EV Charging OEM Process: From Inquiry to Shipment

The eight steps below are the ones every Wanlin export order actually follows. 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

Here is what the people who actually ordered said afterward.

  • Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "The sample arrived with the OCPP conformance log in the box. That sounds small until you have integrated a pile without one."
  • Nguyen Hoang Minh (Charge Point Operator, Ho Chi Minh City, Vietnam): "The sample arrived with the OCPP conformance log in the box. That sounds small until you have integrated a pile without one."
  • Pham Duc Long (Energy Solutions Trading Company Buyer, Medan, Indonesia): "The tuk-tuk model went into our fleet depot and paid for itself in metered revenue the first quarter."

Frequently Asked Questions

Q: What is the minimum order for custom charging stations?

A: 50 units on existing enclosure tooling; new molds start at 300 units.

Q: Can you build to our socket standard and voltage?

A: Yes, socket type, voltage class and plug heads follow your market standard, verified against drawings you approve.

Q: Do you support our CSMS and payment gateway?

A: We integrate OCPP 1.6J against your endpoint during development and validate the payment flow on your staging gateway.

Q: Who owns the custom tooling and firmware?

A: The buyer owns new molds paid under exclusive agreements; custom firmware is licensed exclusively per contract.

Q: How fast can we get samples?

A: 15 days for cosmetic and firmware changes on existing platforms, including your logo.

Project Summary

What the field test actually measured By working directly with manufacturer Wanlin, the Energy Solutions Trading Company Buyer team in Medan 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