Lithium battery packs rated above 160 Wh are prohibited in both passenger carry-on and checked baggage; they can only move via the freight channel through a certified forwarder as full dangerous goods (DG).
IATA-BATT-03ProhibitedVerified against source · 2026-10-15Lithium battery packs rated above 160 Wh are prohibited in both passenger carry-on and checked baggage; they can only move via the freight channel through a certified forwarder as full dangerous goods (DG).
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.
Lithium battery packs rated above 160 Wh are prohibited in both passenger carry-on and checked baggage; they can only move via the freight channel through a certified forwarder as full dangerous goods (DG).
IATA-BATT-03ProhibitedVerified against source · 2026-10-15Lithium battery packs rated above 160 Wh are prohibited in both passenger carry-on and checked baggage; they can only move via the freight channel through a certified forwarder as full dangerous goods (DG).
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.
| Carrier | Stance | Notes |
|---|---|---|
| USPS | ⛔ Refused | Lithium cells above 100 Wh each are broadly prohibited on postal channels; the rules for standalone batteries differ from those for battery-included devices. Note: this answer says nothing about Japan import law and is not grounds for release. |
| 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. |
A call center only says “we don’t take it”. Every path below is a concrete change that turns “no” into “yes, if you do this”. The badge beside each path is recomputed by running the modified item through the rule engine — trust that, not the promise.
Amounts follow the current publication of Japan regulators; we never show unverified numbers on a page. Decision-grade ranges appear in the “penalty exposure” section of the full dossier.
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 Electric scooter / e-board with 500 Wh battery (lithium battery 500 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 : Electric scooter / e-board with 500 Wh battery
Nature / 性質 : synthetic · device · cooked
Battery / 電池 : 500 Wh lithium-ion
Quantity / 数量 : 1 unit
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).