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Black rectangular power bank with built-in USB-C cable lanyard, 4.1 by 2.8 by 1.2 inches

No Sew

No Sew INIU P512 20000mAh 22.5W Power Bank Black

SKU CH-N7ZP-HQA7D

A 20000mAh lithium-polymer power bank delivering 22.5W fast charging through two USB-C outputs and a built-in USB-C cable lanyard

  • Total capacity20,000 mAh
  • Battery chemistryLithium polymer
  • Voltage12 V AC
  • Output typeUSB Type C * 2 + USB C *1
  • InputOutput: USB Type C * 2 + USB C *1
  • Measurements4.1 in × 2.8 in × 1.2 in
  • Pocket-size 20000mAh capacity fits four full phone charges
  • Detachable nylon lanyard doubles as built-in USB-C cable
  • 5W fast charge reaches 70% Samsung S25 or 60% iPhone 16 in 25 minutes
  • TSA-approved 20000mAh capacity clears airport security with built-in flashlight
  • 38 million users backed by three-year replacement guarantee

Pocket-Sized 20000mAh Power Bank

The INIU P512 packs a 20000mAh lithium-polymer cell into a frame measuring 4.1 in by 2.8 in by 1.2 in. It targets travellers and daily commuters who need multiple phone charges without carrying a bulky brick.

Detachable Nylon Lanyard Cable

A built-in USB-C cord doubles as a woven nylon lanyard rated to outlast standard plastic by 3X. The unit also provides two additional USB-C ports so Apple users or multi-device owners can plug in without hunting for extra cables.

22.5W Fast Charge Output

The power bank delivers up to 22.5W, pushing a Samsung S25 to 70 percent or an iPhone 16 to 60 percent in 25 minutes. Thermal sensors throttle output to prevent overheating, so sustained peak power is not guaranteed for every session.

How it compares

Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 60% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameINIU
Model nameP512
Part numberP512
Total capacity20,000 mAh
Product type20,000 mAh
Product colorBlack
Ports & slots
Output typeUSB Type C * 2 + USB C *1
InputOutput: USB Type C * 2 + USB C *1
Power
Battery chemistryLithium polymer
Voltage12 V AC
Size & build
Measurements4.1 in × 2.8 in × 1.2 in

Questions about this item

What USB-C output does the P512 provide and what power does it cap at?

Two USB-C ports deliver up to 22.5 W fast charging; the built-in USB-C cable acts as a lanyard and supports the same output.

What are the exact dimensions and weight of this power bank?

It measures 4.1 in × 2.8 in × 1.2 in and weighs approximately 11 oz with its high-density lithium-polymer cells.

How do I recharge the P512 and which port must I use?

Recharge only through the USB-C port; a 20 W charger refills it in 5.4 hours and a 15 W charger in 6.6 hours.

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