Best Pay-per-Use Coin Slot Charger Manufacturer | Chiang Mai, Thailand - CE OCPP Wanlin

Executive Summary: Pay-per-Use Coin Slot Charger for Global Buyers

The part of the story that changed the buyer's math The WL-CN6 runs six sockets on multi-coin coin acceptors with anti-string mechanics, field-adjustable kWh mapping and a dual-lock cash box. 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 number the buyer quoted back in the reorder with resale margins holding at 38% 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: Chiang Mai Charge Point Operator Sourcing Success

The first message asked for a catalog. The real question surfaced two weeks later. Across the market, most charging complaints trace back to unmetered sockets, flat-rate billing and boards with no overload protection.

Once the first 200 charging sessions reported back, Budi Santoso selected Wanlin as their EV charging manufacturing partner. By the time the container was booked, the decision had already been validated by real riders.

• A 48-hour continuous-load rack cycles every station to catch relay and meter failures early
• each model folder ships with CE, RoHS and IEC 61851 certificates plus the type-test summary
• a private label run can start from 50 units on existing tooling with new packaging

At the taxi queue stand, drivers tapped RFID cards while the station logged each session to the cloud.

Problem Analysis & Field Report: Why Global Buyers Need Pay-per-Use Coin Slot Charger

It started with one return and grew into a spreadsheet of them. A market operator found string-and-weight coin tricks had run free charging on a mechanical slot board for months.

Field case: A market operator in Chiang Mai replaced a mechanical slot board with the WL-CN6 after string tricks ran months of free charging. The anti-string acceptor and per-kWh mapping ended the losses, and the operator held a 38% margin on the first season of honest coin revenue.

Why it matters for global buyers:

• mechanical slots lose revenue to strings, jams and prying
• the fix was anti-string acceptors with dual-lock cash boxes
• coin-to-kWh mapping must be adjustable in the field

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 Pay-per-Use Coin Slot Charger

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
Payment	single-coin and multi-coin acceptors with anti-string mechanism
Tariff Mapping	coin-count to kWh or time mapping, field adjustable
Ports	6 metered sockets per cabinet
Refund Logic	auto refund on fault before charging starts
Cash Box	reinforced steel box with dual locks
Display	coin count, remaining time and kWh display
Protection	per-port overload, leakage and surge
Housing	IP54 anti-pry steel cabinet
Records	coin and kWh counters with tamper log

Application Scenarios for Global Market

Application	Model	How It Helps the User
Open market stand	WL-CN6	Cash riders pay exact kWh without wallets or cards
Street-side socket	WL-CN6	Anti-string acceptor stops the classic coin trick
Laundry-adjacent wall	WL-CN6	Jam-proof slots survive humid corners that kill rivals
Dormitory basement	WL-CN6	Field-adjustable mapping tracks utility rate changes
Rural roadside point	WL-CN6	No network, no wallet, no attendant needed

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:

• A 48-hour continuous-load rack cycles every station to catch relay and meter failures early
• each model folder ships with CE, RoHS and IEC 61851 certificates plus the type-test summary

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 buyer compared five candidates on the metrics that caused their previous failures.

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

Moving from first contact to a sealed container took a sequence the buyer could follow in writing. 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

The notes below are from follow-up calls after the first containers sold through.

• Somchai Prasert (EV Charging Station Distributor, Bangkok, Thailand): "The tuk-tuk model went into our fleet depot and paid for itself in metered revenue the first quarter."
• 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."
• Budi Santoso (Charge Point Operator, Chiang Mai, Thailand): "The first article matched the approved sample on meter accuracy, finish and weight. That almost never happens."

Frequently Asked Questions

Q: How does the WL-CN6 stop coin tricks?

A: The acceptor uses anti-string mechanics plus a tamper log, and the cash box sits behind dual locks in an anti-pry cabinet.

Q: Can we change the coin-to-kWh rate ourselves?

A: Yes, the mapping adjusts in the field without a technician visit, so utility rate changes do not eat the margin.

Q: What happens if a socket faults after coins are inserted?

A: The station refunds automatically before charging starts when a port reports a fault.

Q: Which coins does it accept?

A: Single-coin and multi-coin acceptors are configured to the local currency at order time.

Q: Does it need a network connection?

A: No, coin operation runs fully standalone with local counters and a tamper log.

Project Summary

The number the buyer quoted back in the reorder By working directly with manufacturer Wanlin, the Charge Point Operator team in Chiang Mai reached 38% 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