About DINWEYS
DINWEYS is the truck and heavy-duty starting battery brand of Chengguang Power Tech Co., Ltd. a manufacturer founded in 2002. We focus on one thing: starting batteries that hold up under the demands of commercial trucks — high cold cranking amps, vibration resistance, and consistent batch quality.
Our Focus
While many battery suppliers sell a broad catalog, DINWEYS concentrates on the truck and heavy-duty vertical. That focus lets us go deep on what matters to commercial-vehicle buyers: correct group sizes (JIS N150/N200, DIN88/DIN100; BCI Group 31/8D on request), diesel-grade CCA, and 12V vs 24V system requirements.
The Factory Behind the Brand
DINWEYS is manufactured by Chengguang Power Tech Co., Ltd. a battery manufacturer established in 2002 in Jinzhou City, Shijiazhuang, Hebei Province, China. The factory spans 200,000 m² with 18 automated assembly lines, exporting to 70+ countries.
Inside the Factory
A look inside the Chengguang Power Tech Co., Ltd. facility in Jinzhou, Hebei — 200,000 m², 18 automated assembly lines, and the production floor behind every DINWEYS battery.
How Batteries Are Made
Chengguang Power Tech Co., Ltd. controls the entire production chain in-house — from R&D and plate manufacturing to assembly, testing and packaging. Each step runs under an integrated quality management system, so a DINWEYS battery is not assembled from outsourced parts but produced end-to-end on the same 18 automated lines.
- Grid casting — the lead alloy grids that form each plate's structure.
- Paste mixing — lead oxide paste is mixed to a controlled recipe.
- Pasting — the paste is applied to the grids to form the plates.
- Curing — plates are dried and hardened under controlled conditions.
- Formation — the initial charge that converts the plates into active material.
- Assembly — plates are welded into elements and stacked into cells.
- Testing — CCA, capacity, leak and dimensional checks before packing.
Process detail sourced from Chengguang Power Tech Co., Ltd. production documentation under an IATF 16949 quality management system.
Quality Control & Testing
Every DINWEYS batch is verified in five on-site laboratories before release:
| Laboratory | What it verifies |
|---|---|
| Chemical Lab | Raw material analysis, paste composition, electrolyte purity |
| Physical Testing Lab | Plate strength, separator porosity, container integrity |
| Electrical Testing Lab | CCA, reserve capacity, charge acceptance, high-rate discharge |
| Life Cycle Testing | JIS/DIN/BCI standard cycle life, corrosion resistance, overcharge endurance |
| Environmental Chamber | Temperature cycling (−40°C to +80°C), humidity, vibration |
Five-stage quality control runs across the whole chain:
- Incoming material inspection — lead ingots, sulfuric acid, polypropylene and separator materials are tested before production.
- In-process QC — all 18 lines are monitored in real time for paste density, plate weight, welding integrity and electrolyte fill levels.
- Finished product testing — every batch undergoes CCA, reserve capacity, charge acceptance, leak test and visual inspection.
- Pre-shipment audit — random sampling per AQL standards; packaging, labelling and documentation verified.
- Traceability — batch-level tracking from raw material to container, with full documentation for import compliance.
Laboratories, QC stages and documentation (COA, MSDS, inspection reports) are as published on the Chengguang Power Tech Co., Ltd. quality-certifications page. Third-party lab testing (SGS, TÜV, BV) is available at the buyer's request.
Certifications
Held by the manufacturer, Chengguang Power Tech Co., Ltd. Certificate numbers and validity are available on request.
| Certification | Scope | Status |
|---|---|---|
| IATF 16949 | Automotive Quality Management System | Held by manufacturer |
| ISO 9001:2015 | Quality Management System | Held by manufacturer |
| ISO 14001:2015 | Environmental Management | Held by manufacturer |
| ISO 45001:2018 | Occupational Health & Safety | Held by manufacturer |
| OHSAS 18001 | Health & Safety Management | Superseded by ISO 45001 (formerly held) |
| CE Marking | European Conformity | Conformity per applicable directives |
Certificate numbers, issuing bodies and validity are provided with quotations. Third-party lab testing (SGS, TÜV, BV) available at buyer's request.
Standards we follow: Battery Council International (BCI) for group sizing, and SAE International for the J537 cold-cranking-amp test.
What Our Partners Value
Themes that recur across the distributors, importers and fleet operators we supply in 70+ countries.
"Middle East distributors consistently highlight batch-to-batch consistency — every delivery ships with CCA test data and full documentation."
— Distributor partners, Middle East
"South American importers value OEM customization speed — from drawing to approved sample, with brand and packaging built to spec."
— Importer partners, South America
Who You Work With
DINWEYS is led on the commercial side by Martin Wong, Sales Director — 14 years in battery manufacturing, from the production floor to export sales. Martin is the named point of contact for OEM, private-label and fleet programs, and the editor responsible for the technical guidance published on the DINWEYS Knowledge Hub.
Technical documentation is written and reviewed against manufacturer data sheets under an IATF 16949 quality management system.
Contact
Email: martin@dinweys.com
Phone / WhatsApp: +86 13323237275
Address: Lvjiaying Village, Mayu Industrial Park, Jinzhou City, Shijiazhuang, Hebei, China
🏭 Visit our factory site: Chengguang Power Tech Co., Ltd.
📚 Read the technical guides: DINWEYS Knowledge Hub
Explore DINWEYS
Frequently Asked Questions
Is DINWEYS a factory or a trading company?
DINWEYS is the truck and heavy-duty starting battery brand of Chengguang Power Tech Co., Ltd. a manufacturer founded in 2002 in Jinzhou City, Hebei, China. Batteries are produced end-to-end on the company's own 18 automated assembly lines rather than assembled from outsourced parts.
Where are DINWEYS batteries manufactured?
At the Chengguang Power Tech Co., Ltd. facility in Jinzhou City, Shijiazhuang, Hebei Province, China — a 200,000 m² plant with 18 automated assembly lines. The facility figures are stated by the manufacturer and are not third-party audited.
What certifications does the factory hold?
The plant operates under an IATF 16949 quality management system, and the manufacturer states ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, OHSAS 18001 and CE marking. Certificate numbers, issuers and scope have not been published on this site yet — ask for them with your quotation.
Does DINWEYS offer OEM and private-label production?
Yes. OEM and private-label supply are part of the product range; branding, packaging, documentation and batch test records are agreed per program. Tell us the group size, CCA and market, and we quote against your specification.
Which battery sizes does DINWEYS publish specifications for?
Four first-party models: 145G51 (N150), 190H52 (N200), 58827 (DIN88) and 60038 (DIN100). BCI Group 31 / 8D is made to order, and six further group sizes (N70, N100, N120, N220, DIN66, DIN74) are listed as third-party reference only — not DINWEYS published stock ratings.
Every claim on this page is tracked in the Evidence & Data ledger, including the two we have not yet verified (facility figures and certification documents).
Technical review — Reviewed by the DINWEYS technical team. Manufacturer: Chengguang Power Tech Co., Ltd. Data source: manufacturer specification and test documentation. Specifications vary by model and standard; confirm final values with the manufacturer.