Oops! Japan #35 — Portable Wi-Fi Needs Power Too （ポケットWi-Fiとバッテリー問題） The Surprise of Staying Connected: Why Charging Is Everything


 Oops! Japan #35 — Portable Wi-Fi Needs Power Too


（ポケットWi-Fiとバッテリー問題）

The Surprise of Staying Connected: Why Charging Is Everything


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English:


You’ve landed in Japan and picked up your pocket Wi-Fi at the airport. You’re ready to stream, map, and translate on the go. But halfway through the day… it’s dead. No signal, no map, no Uber — and maybe no idea how to get back.


Here’s what travelers say:


“The Wi-Fi router only lasted 4 hours. I had to keep turning it off and on to save battery.”

“I didn’t realize I’d need to charge it just like a phone — my power bank saved me.”


Why it happens:

• Most portable Wi-Fi devices have limited battery life (4–6 hours max)

• They don’t shut off automatically — and staying connected 24/7 drains them fast

• Some users forget they’re separate from your phone — they need their own USB-C cable and charger


Smart travel tips:

• Always carry a power bank — and check it’s fully charged before leaving your hotel

• Use ChargeSPOT stations at convenience stores (7-Eleven, Lawson) to rent chargers easily

• Consider using eSIM or mobile data as a lighter alternative


Japan is wonderfully connected — but your tech needs fuel too. A dead pocket Wi-Fi could leave you stranded in the most unexpected ways.


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日本語の補足：


ポケットWi-Fiは便利な反面、バッテリーの消耗が非常に早いのが盲点です。

「観光の途中で突然つながらなくなった…」という声も多く、充電対策が必要です。

• 使用中は常時電源ONになっているため、4～6時間でバッテリー切れも

• 旅行中はスマホに気を取られがちで、Wi-Fiルーターの充電を忘れがち

• 「ChargeSPOT（チャージスポット）」でモバイルバッテリーを借りるのもおすすめ


備えあれば憂いなし。日本旅行中も「通信手段のバッテリー管理」はお忘れなく。


⸻


Next up:


Oops! Japan #36 — Google Maps Can’t Always Get You Out

（Googleマップの「出口迷子」問題）

“Which way is north!?” How even the best map app gets confusing in Japan’s multi-exit stations.


次回予告：Oops! Japan #36 — 出口どっち!? Googleマップも困る日本の駅構造とは？

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