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The part of the story that changed the buyer's math The WL-AC33 delivers up to 3.3kW across eight current dial steps with chemistry profiles for lead-acid and lithium, plus reverse-polarity protection. 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. Hard numbers from the trial which translated into a 39% 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
The request that opened the account was a fault report, not a purchase order. Across the market, most charging complaints trace back to unmetered sockets, flat-rate billing and boards with no overload protection.
Once the field units logged 5,000 charging sessions, Aung Kyaw Moe selected Wanlin as their EV charging manufacturing partner. By the time the container was booked, the decision had already been validated by real riders.
The monsoon test bench sprayed the cabinet for an hour and the IP54 gaskets kept the board dry.
What looked like a price problem turned out to be a reliability problem in disguise. A rental fleet manager documented swollen packs after shared scooters drew a charge curve meant for a different chemistry.
Field case: A repair shop in Bandung standardized on the WL-AC33 after a fixed-current unit cooked a lithium pack on the bench. Chemistry profiles and a locked current dial ended the cross-chemistry mistakes, and the shop battery warranty claims stopped the same month.
Why it matters for global buyers:
Wanlin runs OEM and ODM programs for buyers who want their own charging station line without building a factory. Customization covers:
The shipping version keeps the same sealed gland plate and the same RCD wiring the field units earned.
Core Features:
| Parameter | Wanlin Specification |
|---|---|
| Output | 3.3kW max, current adjustable in 8 steps from 6A to 15A |
| Chemistry Profiles | dedicated curves for lead-acid and lithium packs |
| Display | LCD with current, voltage and cumulative kWh |
| Control | rotary current dial with lock cover |
| Protection | overcharge, overheat, short circuit and reverse polarity |
| Housing | IP54 shell for portable or wall-mount use |
| Cable | 1.8m output lead with interchangeable plug heads |
| Timer | optional charge timer with auto cut-off |
| Application | Model | How It Helps the User |
|---|---|---|
| Mixed scooter fleets | WL-AC33 | One charger dial matches every battery in the fleet |
| Repair shop bench | WL-AC33 | Chemistry profiles stop cross-chemistry cooking on the bench |
| Rental fleet check-in | WL-AC33 | Staff lock the dial so returns always charge right |
| Home garage wall | WL-AC33 | Reverse-polarity protection forgives hurried plugs |
| Resort bike fleet | WL-AC33 | Interchangeable plug heads cover every bike model |
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:
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.
The rows below come from the buyer's own comparison notes, not from our brochure.
| 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 |
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:
Buyers from three countries said the same thing in their own words.
A: Turn the rotary dial to the pack specification and lock the cover; eight steps run from 6A to 15A.
A: Yes, the protection circuit blocks wrong-way connections, tested repeatedly on the bench.
A: Yes, dedicated multi-stage curves per chemistry, selected at the dial.
A: Yes, the IP54 shell mounts on the wall or travels with the fleet in a pannier.
A: Yes, logo and color runs start from 100 units.
Hard numbers from the trial By working directly with manufacturer Wanlin, the Property Developer team in Bandung reached 39% 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