In our previous blog posts, we introduced the world‘s top cylindrical lithium battery brands (Samsung, LG, Murata/Sony, Panasonic, Molicel, EVE, BAK, Lishen, and more), covered the full size range from 10440 to 4680 and from AA to 9V, and demonstrated our B2B expertise (bulk discounts, tech support, OEM customization, global logistics). But the foundation of everything is an unshakable commitment: We sell only genuine factory A‑grade cells, backed by international safety certifications.
For B2B customers, battery quality and safety are never “nice‑to‑have” — they are the lifeline of your business. A cell with inflated capacity, high internal resistance, or missing compliance certifications can lead to poor device performance, customer returns, or even fires, lawsuits, and brand destruction. That‘s why we have built a complete system to ensure authenticity and safety from source to destination.
🔍 What Are “Genuine Factory A‑Grade Cells”?
During production, lithium batteries are graded based on capacity, internal resistance, self‑discharge rate, appearance, etc. A‑grade cells meet all original factory specifications and have not been downgraded. B‑grade or C‑grade cells fail certain criteria and are rejected for premium applications.
Our commitment:
✅ All cells are sourced directly from authorized brand distributors or original manufacturers, with full traceable documentation.
✅ Each batch comes with the original factory Certificate of Conformance (COC), clearly stating capacity, internal resistance, voltage, and batch number.
✅ We never mix B‑grade, used, or counterfeit cells. Customers may randomly sample and test — we guarantee authenticity with a “10x refund” policy.
Why does this matter? A‑grade cells ensure consistency. In a battery pack, mismatched capacity or internal resistance creates a “weakest link” effect, accelerating pack aging and potentially causing thermal runaway. For power tools, energy storage systems, and EVs, A‑grade is the only acceptable choice.
📜 UN38.3 & MSDS: The International Safety Passport for Lithium Battery Shipping
Lithium batteries are classified as Class 9 dangerous goods. Air and sea transport are strictly regulated. UN38.3 and MSDS are the two essential documents for any lithium battery export.
| Certification | Full Name | Purpose | What We Provide |
|---|---|---|---|
| UN38.3 | Section 38.3 of the UN Manual of Tests and Criteria | Simulates extreme transport conditions (altitude, vibration, shock, short circuit, overcharge, etc.) to ensure cells will not ignite or explode. | Each batch is UN38.3 tested, with a test summary report provided. |
| MSDS | Material Safety Data Sheet | Provides chemical composition, hazard classification, safe handling, spill response, firefighting measures — required for customs and freight forwarders. | Bilingual (EN/CN) MSDS for all in‑stock models. |
Without these certifications, your shipment risks:
❌ Customs detention or return
❌ Rejection by airlines or shipping lines
❌ No insurance coverage in case of an incident
That‘s why we not only supply compliant cells but also proactively provide a complete shipping documentation package for every B2B customer — making your export process smooth and worry‑free.
🛡️ Beyond Certification: Our Internal Quality Control System
In addition to relying on factory A‑grade cells and international certifications, we have built a multi‑layer quality control process at our own warehouse:
Incoming Inspection – For each batch, we randomly sample cells and test capacity, internal resistance, and voltage to verify consistency with the factory report.
Batch Traceability – Every carton is labeled with a batch number, traceable to the original production date and line.
Safety Packaging – All cells are packed using anti‑static trays, individual compartments, or flame‑retardant materials, fully compliant with IATA (air) and IMDG (sea) regulations.
Periodic Third‑Party Testing – We commission labs such as SGS or TÜV annually to renew UN38.3 and MSDS for our most popular models.
🔗 Authenticity & Safety – The Foundation of All Our Advantages
Looking back at our four core value propositions, authenticity and safety underpin each of them:
Top Brands – We source only A‑grade cells from top‑tier brands, never from unknown or downgraded sources.
Full Size Range – Every size (from 10440 to 4680) follows the same A‑grade standard and safety certification.
B2B Experts – Our technical support team proactively advises customers on certification requirements and assists with customs clearance documentation.
Genuine & Safe – This is our baseline and our proudest label.
🛒 Experience Genuine A‑Grade Cells & End‑to‑End Safety Services Today
Whether you need 18650, 21700, AA/AAA, 9V, or D cells; whether your order is 100 pieces or 100,000 pieces; whether you need UN38.3 reports or MSDS documents — we are ready to serve you.
👉 Browse our Full Cylindrical Battery Product Page
👉 Visit the 18650 Section or 21700 Section
👉 Need a quote or safety documents? Fill out our B2B inquiry form
You can also contact us directly:
Email: support@oneandes.com
WhatsApp/Phone: +86 13923810766
Every cell has its proof of origin. Every shipment has its safety. Choose us, and choose peace of mind.