Can I mail a car key fob with battery?
Mailing a car key fob with a battery is subject to strict regulations due to lithium battery safety risks. If the key fob contains a lithium coin cell (e.g., CR2032), it may be shipped domestically via ground transport if properly installed in the device, labeled, and packaged to prevent short circuits. However, air transport is prohibited in China due to unresolved aviation compliance protocols. International shipments require adherence to destination-country rules, often mandating UN38.3 testing and specialized packaging. Non-lithium batteries (e.g., alkaline) face fewer restrictions.
Understanding the Difference Between UN3480 and UN3481 for Lithium Batteries
What defines a lithium battery in key fobs?
Key fobs typically use lithium coin cells (e.g., CR2032) classified as lithium-metal batteries. These fall under UN3090/3091 regulations requiring specific handling. Pro Tip: Check battery markings—lithium-metal cells show “Li” or “CR” codes, while lithium-ion uses “Li-ion” or “ICR.”
Most car key fobs contain 3V lithium-metal batteries with 0.1–0.3g lithium content, below the 1g per cell airmail threshold. However, China’s current aviation ban overrides this allowance. Ground shipping remains viable if the battery is securely installed. For example, a detached CR2032 battery cannot be mailed alone but can ship inside the fob with terminals protected by plastic caps. Warning: Using standard envelopes risks crushing cells—always use rigid packaging with “Lithium Battery” labels.
How do airmail restrictions affect key fob shipping?
China’s aviation ban blocks all lithium battery airmail, including installed cells. This stems from unresolved UN3481/UN3091 compliance protocols at postal hubs. Pro Tip: Use ground couriers like SF Express or EMS for domestic shipments—they’re exempt from aviation restrictions.
| Transport Method | Allowed | Requirements |
|---|---|---|
| Air (China) | ❌ | Total ban per CAAC rules |
| Ground (China) | ✅ | Installed battery, UN-certified box |
What packaging prevents shipping hazards?
Use UN-certified packaging with three-layer protection: inner insulator (e.g., plastic shell), cushioning material (anti-static foam), and rigid outer box. For international shipments, include Class 9 hazard labels and a lithium battery handling document.
Practical example: A BMW key fob shipped to Germany requires:
1. Battery terminals covered with tape
2. Silicone sleeve for shock absorption
3. UN-certified box marked “Li-Metal Battery Contained”
4. Shipper’s declaration for customs clearance
Battery Expert Insight
FAQs
Yes, but only via ground/sea routes. Dead lithium batteries still require UN38.3 test certificates and hazard labeling in most countries.
Do alkaline key fob batteries have restrictions?
No—alkaline batteries (e.g., LR44) aren’t classified as dangerous goods. They can ship freely via air/ground without special packaging.