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20000mAh Ultra-Thin Power Bank
$24.99
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Damaged or defective?Free replacement or refundAt a glance
- How it charges your phone
- By cable
- Battery
- 20000mAh
- Output
- Two USB outputs, 2.1A and 1A, two devices at once
- Worth knowing
- About 1 cm thick, 4-light battery indicator, LED flashlight
Big power in a slim, pocket-friendly shell. This 20000mAh pack slips into a bag or back pocket and keeps your devices charged all day, with dual outputs to power two things at once.
- 20000mAh capacity
- Slim, lightweight profile
- Dual-device charging
- Fast, stable output
- LED battery indicator
Product details
- Type
- Power Bank
- Category
- Phones & Accessories
- Listed specs
- 20000 mAh
- Watt-hours
- about 74Wh
- Outputs
- Two USB ports, 5V/2.1A and 5V/1A
- Input
- 5V/2.1A
- Size
- About 15 x 7.2 x 1 cm (5.9 x 2.83 x 0.39 in)
- Weight
- About 205 g (0.45 lb)
- Shell
- Aluminum alloy with ABS and PVC
- Extras
- 4-light battery indicator, built-in LED flashlight
- In the box
- Power bank and a 30 cm (11.8 in) USB charging cable
- Working temperature
- 14 to 104°F (-10 to 40°C)
Questions about the 20000mAh Ultra-Thin Power Bank
Can I take the 20000mAh Ultra-Thin Power Bank on a plane?
Yes, in your carry-on or on your person, never in a checked bag. Worked out from the listed capacity (Wh = mAh / 1000 x 3.7), 20,000mAh is about 74Wh. That is under the 100Wh limit, so it flies with no airline approval. Airlines can set stricter limits, and the rating printed on the casing is what security goes by.
Power bank airline rules, explainedWhich color choices does the 20000mAh Ultra-Thin Power Bank come in?
3 color choices: Black, RoseGold, HotPink. Sold out right now: RoseGold. Pick one above before you add it to the cart.
Does the 20000mAh Ultra-Thin fast-charge a phone?
No. Its faster port puts out 5V at 2.1A, about 10.5W, which is standard USB charging, and the listing names no USB-C Power Delivery or Quick Charge port. It suits topping up a phone over a long day. For faster wired charging, the MagSafe packs on our power banks page list PD20W USB-C.
Can it charge two devices at the same time?
Yes. It has two USB outputs, one at 2.1A and one at 1A. Plug your phone into the 2.1A port and something smaller, like earbuds or a watch, into the 1A port.
How many times will it charge my phone?
About three full charges for a typical phone, and fewer for a large phone or a tablet. Some energy turns into heat on the way, so a phone never receives the full 20000mAh.
How does it compare with the 20000mAh option of the 30000mAh Fast-Charging Power Bank?
Both hold 20000mAh, about 74Wh, so both fly in a carry-on with no airline approval. The Ultra-Thin is the slim one, about 1 cm thick and 205 g, with two USB outputs and a flashlight. The 30000mAh Fast-Charging Power Bank lists fast charging over multiple ports in a larger pack. The power bank comparison shows every capacity side by side.
How do I turn on the flashlight?
Press and hold the power button. The 4 indicator lights next to it show how much charge is left, and when only one light remains, it is time to recharge the pack.
Shipping & delivery
Ships from a US warehouse within 1 to 2 business days. Most US orders arrive within 5 to 7 business days. Free shipping on orders of $99 or more; orders under $99 ship for a flat $5.99.
Returns & warranty
Return most items within 30 days of delivery in original condition. Eligible products carry the manufacturer warranty where it applies.
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20000mAh Ultra-Thin Power Bank