JPSaver 日本語
KEEMOO ポータブル電源 31000mAh（99.2Wh）USB-C急速充電 128W飛行機持ち込み可 リン酸鉄リチウム電池 小型・軽量 防災/停電/キャンプ用 モバイルバッテリー PSE認証済み
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KEEMOO Portable Power Station 31000mAh: Airplane Compatible?

This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

4.5(26)

JPSaver Score

Rating
4.5
Popularity
1.8

A compact 99.2Wh portable power station using long-life LFP batteries, designed for airplane carry-on and fast USB-C charging.

👍 Great for

Ideal for business travelers and commuters needing to charge laptops and smartphones, or those specifically requiring an airplane-compliant power source.

🤔 Not for you if

Not suitable for users needing AC outlet power for home appliances or those requiring high-capacity power stations for extended camping trips.

✓ Pros

  • • Long-life LFP battery maintaining 80%+ capacity after ~2,000 cycles [S1]
  • • 99.2Wh capacity allows for airplane carry-on [S1]
  • • Fast recharging in approx. 1.8 hours via 100W USB-C input [S1]
  • • Three ports (2x USB-C, 1x USB-A) for simultaneous device charging [S1]
  • • PSE certified with a 2-year manufacturer warranty [S1]

✗ Cons

  • • 100W solar panel is sold separately [S1]
  • • Specific maximum wattage per individual port is not detailed

Review

The KEEMOO Portable Power Station (31000mAh/99.2Wh) is a compact power solution designed for portability and longevity. It utilizes Lithium Iron Phosphate (LFP) batteries, which the manufacturer claims can maintain over 80% capacity after approximately 2,000 charge-discharge cycles [S1]. For recharging, it supports up to 100W input via USB-C, allowing a full charge in about 1.8 hours [S1]. It features three output ports (2x USB-C and 1x USB-A) capable of simultaneously fast-charging smartphones, tablets, and laptops [S1]. With a capacity of 99.2Wh, this unit is compliant for airplane carry-on [S1]. Safety is addressed through PSE certification and a six-fold protection system covering overcharge and overheating [S1]. It is also compatible with optional 100W solar panels [S1].
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FAQ

Q. Is it allowed on airplanes? ▾

Yes, its 99.2Wh capacity makes it compliant for airplane carry-on [S1].

Q. How long does it take to recharge the unit? ▾

It takes approximately 1.8 hours for a full charge when using a USB-C port with up to 100W input [S1].

Q. What is the lifespan of the battery? ▾

It uses LFP batteries designed to maintain over 80% capacity even after approximately 2,000 charge-discharge cycles [S1].

Sources and buying checks

This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

Guide updated: 2026-09-06

Before buying in Japan, check the exact model’s manual/app language, local warranty, required accessories and installation or compatibility requirements. Unlisted capabilities are not confirmed.

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This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

￥10,032 View on Amazon →