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Two slim rectangular power banks, one black and one white, lying side by side

Miady AS-TPB21 2-pack 10000mAh power bank black white

SKU CH-GYVT-QV1FG MPN AS-TPB21

A two-pack of slim 10000mAh lithium-polymer power banks with dual USB-A and USB-C outputs for charging three devices simultaneously

  • Total capacity10,000 mAh
  • Battery chemistryLithium polymer
  • Voltage3.7 V
  • Amperage2.4 A
  • Output typeUSB
  • InputUSB
  • Charge three devices simultaneously via dual USB-A and USB-C ports
  • USB-C port handles both input and output for flexible recharging
  • Two-pack provides backup power at home and on the go
  • Slim 0.79 in profile and 437 g weight fit easily in pocket or bag
  • 10000 mAh lithium-polymer capacity keeps phones and tablets powered longer

Two-pack 10000mAh power bank

This set includes two slim 10000mAh lithium polymer power banks in black and white. Each unit delivers up to 2.4 amps through dual USB-A ports and a bidirectional USB-C port. The pair suits commuters, students and families who want a spare unit at home and another in a bag.

Thermals noise and power draw

Each bank operates at 3.7 volts and weighs 437 grams for the pair. The slim profile measures 7.09 in x 5.51 in x .79 in, so heat dissipates across a broad surface without active cooling. No fan means silent operation while charging three devices at once.

Bundled accessories and software

The two-unit bundle lets you keep one charger topped up at a desk and carry the other for travel. Bidirectional USB-C removes the need for a separate input cable, simplifying the kit. No software or extra adapters are included.

How it compares

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

Price $22.99
Cheaper than about 87% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameMiady
Model nameAS-TPB21
Part numberAS-TPB21
Total capacity10,000 mAh
Product type10,000 mAh
Product colorBlack+White-1
Ports & slots
Output typeUSB
InputUSB
Power
Battery chemistryLithium polymer
Voltage3.7 V
Amperage2.4 A
Size & build
Measurements7.09 in × 5.51 in × 0.79 in
Product weight437 g

Questions about this item

How do I use the USB-C port to recharge the AS-TPB21 and what mistake should I avoid?

Connect a USB-C cable to the port and a power source; the same port also charges devices, so do not plug a device in while recharging the bank or power will flow the wrong way.

What part of the Miady AS-TPB21 will degrade first and need replacement?

The internal 3.7 V lithium-polymer cells lose capacity after hundreds of charge cycles; when runtime drops noticeably, replace the whole power bank.

Which limit appears first during continuous 2.4 A output on the AS-TPB21?

The 10000 mAh capacity drains in roughly four hours at full load, and the slim case makes the bank warm, so heat becomes the practical ceiling.

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