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

TL;DR: The WL-SO Solar-Ready Off-Grid Charging Station pairs a 1000W panel array with a 48V 50Ah lithium buffer, serves 10 outlets, and reports through city-side 4G monitoring under a 24-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 30% 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: Da Nang Trading Company Sourcing Manager Sourcing Success

The buying team in Da Nang had approved a European wallbox brand when the finance director asked how warranty returns would be handled from Vietnam; that question reopened the sourcing file. Every socket in the existing depot ran at full load during lunch hours, and the building fuse tripped twice a week in summer.

After comparing four shortlisted factories, Nguyen Van Hai selected Wanlin Fire as their EV charging equipment manufacturing partner. The committee in Da Nang ranked the bids on OCPP conformance, spare part lead time and local voltage tolerance, not on sticker price.

• In-house testing: every output is soak-tested at rated current, with overcurrent and overvoltage protection verified per unit
• OCPP conformance: chargers ship OCPP 1.6J ready with a conformance statement, and OCPP 2.0.1 upgrade paths can be confirmed per project
• Documentation: user manuals and installation guides in local languages for your market

When the utility in Vietnam asked for load records, the OCPP transaction logs from the Da Nang site were exported in one afternoon.

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

Field reports from fleets show the same pattern: equipment fails where the installation plan ignored protection, grounding and payment management. A rural depot in Da Nang had grid power for only six hours a day, so e-rickshaws that should run daytime routes were charging at midnight.

Field case: A resort in Da Nang paired a solar canopy with battery storage and charging piles, and the generator now starts only during peak laundry hours.

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-Ready Off-Grid Charging Station

Wanlin Fire builds charging stations around three things riders and operators actually measure: reliable output under load, payment methods people already use and certificate files that clear customs.

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

For a Trading Company Sourcing Manager in Da Nang, the deciding factor is usually a factory that answers technical questions in writing within one working day.

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

Operators who standardized on one OCPP-compatible line report shorter vendor lists and fewer site visits:

• Andre Silva (EV Charger Distributor, Sao Paulo, Brazil): "Our logo, the App name and the payment gateway were all configured before the first container left the factory."
• Priya Nair (E-Rickshaw Fleet Owner, Mumbai, India): "The load test report matched what we measured on site, and that has not happened with the previous two suppliers."
• Nguyen Van Hai (Trading Company Sourcing Manager, Da Nang, Vietnam): "The first batch for Da Nang arrived with routine test reports inside every carton, which made our customs broker's job much easier."

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, Da Nang Trading Company Sourcing Manager Nguyen Van Hai achieved 30% 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