Japan Post: lithium batteries in international mail are bound by the ICAO Technical Instructions and UPU restrictions. 'Batteries contained in equipment' meeting certain conditions may be sent; standalone batteries must be declared per specification with a per-package cap of 4 cells or 2 assembled batteries, and the service is unavailable to some destinations and service types. Batteries not meeting the conditions are prohibited items.
JP-POST-BATTERY-01Prior permit requiredVerified against source · 2026-11-03Japan Post: lithium batteries in international mail are bound by the ICAO Technical Instructions and UPU restrictions. 'Batteries contained in equipment' meeting certain conditions may be sent; standalone batteries must be declared per specification with a per-package cap of 4 cells or 2 assembled batteries, and the service is unavailable to some destinations and service types. Batteries not meeting the conditions are prohibited items.
※ Quantity cap taken from the Japan Post conditions PDF (4 cells / 2 assembled batteries); to verify: the allowed weights and label versions for each watt-hour tier must be re-read against the current PDF.
IATA-BATT-01Generally permittedVerified against source · 2026-10-15Portable electronic devices with a built-in lithium-ion battery rated at no more than 100 Wh may generally be carried as hand luggage; spare batteries must be individually protected against short circuits.
※ Individual airlines may impose stricter rules on top of IATA (e.g. a cap on the number of spare batteries); defer to the operating airline's terms on the day of travel.
Japan Post: lithium batteries in international mail are bound by the ICAO Technical Instructions and UPU restrictions. 'Batteries contained in equipment' meeting certain conditions may be sent; standalone batteries must be declared per specification with a per-package cap of 4 cells or 2 assembled batteries, and the service is unavailable to some destinations and service types. Batteries not meeting the conditions are prohibited items.
JP-POST-BATTERY-01Prior permit requiredVerified against source · 2026-11-03Japan Post: lithium batteries in international mail are bound by the ICAO Technical Instructions and UPU restrictions. 'Batteries contained in equipment' meeting certain conditions may be sent; standalone batteries must be declared per specification with a per-package cap of 4 cells or 2 assembled batteries, and the service is unavailable to some destinations and service types. Batteries not meeting the conditions are prohibited items.
※ Quantity cap taken from the Japan Post conditions PDF (4 cells / 2 assembled batteries); to verify: the allowed weights and label versions for each watt-hour tier must be re-read against the current PDF.
IATA-BATT-01Generally permittedVerified against source · 2026-10-15Portable electronic devices with a built-in lithium-ion battery rated at no more than 100 Wh may generally be carried as hand luggage; spare batteries must be individually protected against short circuits.
※ Individual airlines may impose stricter rules on top of IATA (e.g. a cap on the number of spare batteries); defer to the operating airline's terms on the day of travel.
| Carrier | Stance | Notes |
|---|---|---|
| 日本郵便 | 🟡 Conditional | Lithium-ion batteries are restricted on international mail; follow the prohibited-items rules and packaging certification in force at the time of posting. Note: this answer says nothing about Japan import law and is not grounds for release. |
One call answers “do you take it” but never “does the country allow it”. Only after all four questions do you have the complete answer. Note the agent's ID and the time of each answer.
“I want to send Camera drone with 3 spare LiPo batteries (lithium battery 98 Wh) from [origin country] to Japan via postal parcel. Does your network accept it?”
Why ask it this way: Ask acceptance first, never compliance — agents are responsible for what they carry, and a compliance question only earns a disclaimer.
“If you accept it: exactly how must the waybill describe the contents? What labels or enclosed documents do you require? Please give me the specific wording.”
Why ask it this way: A waybill description that mismatches the contents is the number-one trigger for inspection. You need exact wording, not “be more detailed”.
“If you don't: which prohibited-items clause applies? Would a change in [processing / packaging / quantity] make it acceptable? Do any of your other services carry it?”
Why ask it this way: Turn “no” into “yes, under condition X” — this question routinely surfaces routes the carrier would never volunteer.
“Is your refusal based on Japan import restrictions, or on your own policy? Can you give me the written link or clause number?”
Why ask it this way: This separates the two switches. Carrier policy can be switched; import law cannot — the answer decides your next move.
DECLARATION — 申告 / 申报
I am carrying/mailing the following item for personal use. / 私は個人使用のために以下の物品を持ち込みます（発送します）。
Item / 物品 : Camera drone with 3 spare LiPo batteries
Nature / 性質 : synthetic · device · cooked
Battery / 電池 : 98 Wh lithium-ion
Quantity / 数量 : 4 batteries
Channel : postal parcel
Generated by this site on 2026-11-10. Informational aid only — not an official document, permit, or guarantee of admission. 本卡片为信息辅助文件，非官方文件、非许可、不保证放行。
⚠️ Print this page alone. The card is designed to be shown by itself — the officer does not need our verdicts or sources.
Links go to the regulator's or carrier's own pages. We do not host, mirror, or replace the source text. If you believe a verdict here conflicts with the official wording, tell us and include the link — confirmed errors are corrected publicly.
A carrier answers “do we take this on our network today”; import and biosecurity authorities in Japan answers “does this country let it in”. Two independent questions — no single institution answers both, and seized parcels almost always trace back to asking only one. This site solves the two switches together and shows you what change makes it work.
Selling (Shopify / Etsy / your own store)? One-off verdicts don't scale — see the For sellers: bulk SKU checking and rule-change alerts ($29/month).