Update: This popular deal is still available.
AMERICA SIXTHGU LLC via Amazon has
200W SIXTHGU 3-Port 20,000mAh PowerTower P1 Power Bank w/ 140W USB-C PD (2x USB-C + USB-A, Grey, S2112) on sale for $76.99 - $38.50 (50%) when you apply promo code
DLAWKKT9 at checkout =
$38.49.
Shipping is free.
Thanks to Deal Hunter
doublehelixx for sharing this deal.
About this product: - 200W total output supports laptops, tablets, phones simultaneously
- 140W max output charges MacBook Pro to 50% in 28 minutes
- Smart digital monitoring displays real-time power status
- Flight-friendly design complies with TSA regulations
- Includes USB-C to USB-C cable (Emark 240W)
Top Comments
Community Reviews
This 20,000mAh, 200W PowerTower is aimed at fast USB C charging and travel use, with passthrough charging and the ability to charge two devices at once. It is reported to work well for camping and daily charging, and the 72.36Wh capacity sits under the usual 100Wh carry on limit. The main caveats are real world output that may top out well below the advertised wattage, plus heat, bulk, and reliability concerns. A few reports also flag defective or failed units, and it is not CCC approved for China travel.
The power bank can support passthrough charging while powering devices.
The battery capacity is listed as 72.36Wh, which stays under the 100Wh international carry-on limit.
The unit can charge two devices simultaneously at 100W each.
The highest tested output reaches 58W even on a MacBook Pro 16 with M3 Pro.
The power bank may not deliver the advertised 100-140W PD depending on the cables used.
The power bank is not CCC approved, which can create travel problems for China-bound trips.
The power bank can fail quickly, including reports of failure after only a few months of minimal use.
The power bank has reportedly caught fire while charging, creating a serious safety concern.
Common Questions (5)
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Wh = (mAh×V) / 1000
so 27000 x 3.7 / 1000 = 99.9wh
China has the ccc designation for ones they're ok with for domestic flights iirc
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why not? tsa allow up to 100whr
- Under 100Wh: (approx. 27,000mAh). Generally unlimited in quantity for personal use.
- 101Wh – 160Wh: Allowed, but typically limited to 2 units per passenger and usually require prior airline approval.
- Over 160Wh: Strictly prohibited on almost all commercial flights. [1, 2, 3]
Key Travel Rules- No In-Flight Charging: You cannot plug in or use your power bank while on the plane. [1]
- Prevent Short Circuits: Tape exposed terminals or pack individual batteries in their original retail packaging or separate plastic bags. [1]
- No Counterfeits: Devices must be clearly marked with their manufacturer and capacity rating. Unlabeled or homemade power banks are confiscated. [1, 2, 3]
How to Calculate Watt-hours (Wh)If your power bank only lists Milliamp-hours (mAh), use this formula: [1]
\(\text{Watt-hours\ (Wh)}=\frac{\text{Milliamp-hours\ (mAh)}\times \text{Voltage\ (V)}}{1000}\)
(Most power banks operate at 3.7V, meaning a standard 20,000mAh power bank is 74Wh). [1, 2, 3, 4]
Always check the Federal Aviation Administration PackSafe Guidelines or contact your specific carrier (e.g., American Airlines Baggage Guidelines) before flying, as international carriers and individual airlines may implement stricter limits or require specific fire-resistant bags in-flight. [1, 2]
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