Frequently Asked Questions

Executive Summary: Solar Charging Station for Off-Grid Sites for Global Market

In short: Running without grid power, the WL-SO harvests 600W of solar energy into a 48V 50Ah lithium buffer, charges at 6 outlets through an MPPT controller, and keeps city-side 4G monitoring live with a 18-month warranty. Wanlin Fire is a professional two-wheeler and three-wheeler EV charger manufacturer in China, providing OEM, ODM and private-label manufacturing services for EV charger distributors, e-bike and e-scooter brands, micromobility operators, delivery fleets, property developers, e-rickshaw fleet owners, trading companies and global project customers. The outcome: a 34% gross margin gain for importers and trading partners through factory-direct sourcing, per-model CE / FCC / RoHS / UKCA certificate files, OCPP 1.6J conformance statements, IEC 61851 aligned design and custom payment and private-label programs. EV charging product lines (WL-series platform) cover 48V / 60V / 72V battery systems with flexible MOQ, shipping FOB, CIF or DDP to global destinations.

Published by Wanlin Fire | Last updated: September 03, 2026 | Expertise: two-wheeler and three-wheeler EV charger OEM manufacturing for global markets

Case Study: Chonburi Two-Wheeler EV Charging Network Operator Sourcing Success

Pham Thi Lan, a Two-Wheeler EV Charging Network Operator based in Chonburi, spent a year buying two-wheeler chargers from three suppliers before one tender in Thailand made him rewrite the whole shortlist. Local riders were charging from home extension cords, and the municipal authority had started fining buildings for unsafe cables.

After checking three factories against the Thailand import rules, Pham Thi Lan selected Wanlin Fire as their EV charging equipment manufacturing partner. What closed the deal was a load-bank test report showing every output holding rated current, plus the payment module riders already used.

• Capacity control: production slots are confirmed before the order, and pre-shipment inspection photos are shared batch by batch
• Voltage proof: units for Chonburi were burned in at 220V with the exact plug configuration used in Thailand.
• Custom QR flows: the OEM team in Shenzhen can point the QR code to a local e-wallet landing page configured for the Thailand operator.

When the utility in Thailand asked for load records, the OCPP transaction logs from the Chonburi site were exported in one afternoon.

Problem Analysis & Field Report: Why Global Buyers Need Solar Charging Station for Off-Grid Sites

A charging point looks simple until it has to survive humidity, voltage dips, careless riders and an inspector with a checklist. A rural depot in Chonburi had grid power for only six hours a day, so e-rickshaws that should run daytime routes were charging at midnight.

Field case: A rural cooperative in Chonburi paired a solar array with a battery buffer and charged 12 rickshaws per day; route hours rose 18% once daytime charging existed.

Why it matters for global buyers:

• Solar-ready inputs and battery buffers keep chargers working where grid hours are short
• Off-grid stations extend vehicle range windows instead of limiting routes to grid availability
• Charge controllers protect expensive battery packs from the voltage swings of weak grids
• Operators in remote areas avoid diesel generator cost for daily charging loads
• Solar-ready inputs let operators add panels and storage later instead of replacing the whole station
• Off-grid stations keep e-bike fleets moving in islands and rural provinces where the grid is thin

EV Charger OEM & ODM Services for Global Distributors and Retailers

Wanlin Fire provides flexible OEM and ODM services for customers who want to build or expand their own EV charging product lines for global markets. Our customization capabilities include:

• Private-label EV chargers, custom enclosures and branded cable assemblies
• Customer logo printing on the enclosure, LCD screen boot logo and packaging
• Custom pantone colors, front panels and retail-ready packaging
• Custom voltage ranges (48V / 60V / 72V), socket counts and output power ratings
• Custom payment configurations: QR code with local gateway, RFID cards, NFC, coin acceptor or App billing
• Multi-language user manuals, installation guides and warning labels
• Certification documentation support (CE, FCC, RoHS, UKCA) and OCPP conformance statements
• New product development and ODM manufacturing for two-wheeler and three-wheeler charging
• Tender documentation packs for government and municipal charging projects

Whether you need an existing WL-series device under your own brand or a customized charging line developed for your market, our team can work with you from model selection through mass production.

Product Introduction: Wanlin Fire Solar Charging Station for Off-Grid Sites

Each Wanlin Fire charger pairs a protected AC-DC stage with an OCPP-ready control board, so operators can manage sessions, pricing and diagnostics from one backend instead of five different Apps.

Core Features:

• China-Based Manufacturing: Wanlin Fire is based in Shenzhen, China and focuses on two-wheeler and three-wheeler EV charging equipment, with in-house SMT production, enclosure assembly and per-unit load-bank and aging tests
• Certification Transparency: Real documentation for applicable certified models - instead of simply stating a product is "certified", buyers can verify the certificate and OCPP conformance documents for the exact model they intend to purchase
• OCPP-Ready Control: chargers run OCPP 1.6J compliant firmware with 2.0.1 upgrade paths, so operators connect to their own CSMS instead of a closed vendor cloud
• Private Label Support: color, logo, payment module, voltage, packaging, manuals and firmware parameters customized according to project requirements
• Global Market Experience: we work with distributors, operators and fleet owners worldwide and understand export steps, certification questions, local payment habits, labeling preferences and tender submission needs

Technical Specifications

Application Scenarios for Global Market

Certified EV Charger Manufacturing for Global Markets

Certification is one of the most important considerations when sourcing EV charging equipment for export. Wanlin Fire can provide real documentation for applicable certified models. Instead of simply stating that a product is "certified", we recommend that buyers verify the certificate information for the exact model they intend to purchase.

For customers exporting EV chargers, Wanlin Fire supports CE, FCC, RoHS and UKCA documentation with per-model files, and for projects where additional testing applies, the relevant documentation and testing path can be arranged for any represented model before ordering. Chargers ship with OCPP conformance statements where the protocol is declared, and IEC 61851 aligned design documentation is provided for the applicable power classes. Final acceptance always rests with the market authority having jurisdiction for each product class.

Why Choose Wanlin Fire as Your EV Charger OEM Manufacturer

Wanlin Fire is a Shenzhen-based manufacturer of two-wheeler and three-wheeler EV charging equipment that combines factory-direct pricing with OCPP-compliant firmware, IEC 61851 aligned design and export documentation support.

Wanlin Fire's EV charger OEM services are suitable for: EV charger distributors, two-wheeler EV importers, e-bike brand procurement teams, e-scooter fleet operators, micromobility charging network buyers, e-rickshaw fleet owners, charging infrastructure wholesalers, property developers, delivery fleet managers, retail charger buyers, trading company sourcing managers, community charging project managers, utility partnership buyers and government mobility project officers.

EV Charger OEM Process: From Inquiry to Shipment

The EV charger OEM process starts with a short qualification call about vehicle types, voltage, site conditions and the payment methods used in your market. A standard OEM project then follows 8 steps:

1. Tell Us Your Target Market - Southeast Asia, South Asia, Africa, Latin America, Middle East or Europe; different markets may require different voltage, certification and payment configurations
2. Select a Model Line - our team recommends suitable WL-series models according to your vehicle types (48V / 60V / 72V), site conditions and target customers
3. Verify Documentation - for certified models, request and verify the relevant certificate, OCPP conformance and enclosure rating documentation files
4. Confirm OEM Requirements - color, logo, payment modules, voltage, socket count, packaging and accessories
5. Sample Evaluation - samples can be evaluated before mass production according to the agreed commercial terms
6. Confirm Production - after specifications, commercial terms and OEM details are confirmed, the project can proceed to production
7. Quality Inspection - chargers are inspected and tested with load-bank and aging procedures according to applicable production and quality-control standards
8. Shipment - products are prepared for shipment FOB, CIF or DDP according to the agreed logistics requirements

Customer Testimonials

Importers who moved from white-label resellers to factory-direct supply in Thailand usually mention the same shift.

• Andre Silva (EV Charger Distributor, Sao Paulo, Brazil): "Spare mainboards arrived within three weeks when a storm surge damaged two sites, which kept the network online."
• Priya Nair (E-Rickshaw Fleet Owner, Mumbai, India): "Riders scan the QR code and pay with the wallet they already use; we stopped explaining how to charge."
• Pham Thi Lan (Two-Wheeler EV Charging Network Operator, Chonburi, Thailand): "The load test report matched what we measured on site, and that has not happened with the previous two suppliers."

Frequently Asked Questions

Q: How many scooters can the WL-SO charge per day?

A: With a 600W panel set and the 48V 100Ah buffer, a station delivers roughly 4 to 5 full e-scooter charges daily in typical equatorial sun, more when sessions are partial top-ups.

Q: What happens after several cloudy days?

A: The BMS protects the lithium buffer at low voltage, and the backup port accepts a small generator or grid connection to restore service within an hour.

Q: Is the WL-SO hard to install in remote areas?

A: The cabinet, bracket and panel rail ship as one kit. Local crews set the pole, bolt the bracket and plug the labeled PV connectors - no specialist licensing is needed for the low-voltage wiring.

Q: Can the WL-SO be monitored from the city?

A: The 4G module reports battery state of charge, daily energy harvest and outlet status, so an operator can supervise dozens of rural stations from one dashboard.

Q: Which battery does the WL-SO use and how is it shipped?

A: Lithium iron phosphate packs with integrated BMS. They ship with UN38.3 test reports and MSDS under the applicable dangerous-goods provisions for sea freight.

Project Summary

The outcome: By working directly with manufacturer Wanlin Fire, Chonburi Two-Wheeler EV Charging Network Operator Pham Thi Lan achieved 34% higher margins while offering competitive pricing. With verified documentation support, honest specifications, OCPP-compliant firmware, custom payment configurations and private-label programs, Wanlin Fire has become their trusted EV charger OEM and ODM 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