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Black rectangular power bank with built-in USB-C cable looped on side

Anker

Anker A1689 Zolo Power Bank 20000mAh 30W Built-in USB-C Cable

SKU CH-ENHS-3XE29 MPN A1689

A 20,000 mAh portable charger with a built-in USB-C cable delivers 30 W fast charging and fits in a 4.72 × 2.89 × 1.24 in, 0.8 lb case

  • Total capacity20,000 mAh
  • Compatible phone brandsApple
  • Compatible phone modelsiPhone
  • Battery chemistryLithium Polymer
  • Voltage20 V
  • Output type30 W

Color Black

  • 20000mAh capacity charges iPhone 15 up to 4 times
  • 30W output and 20W input enable fast two-way charging
  • Built-in 5.98-inch USB-C cable withstands over 10000 bends
  • ActiveShield 2.0 monitors temperature 3 million times daily
  • Compact 4.72 x 2.89 x 1.24 inch design weighs 12.45 oz

Travel-ready capacity

The 20000 mAh lithium polymer cell delivers enough energy to charge an iPhone 15 up to four times or a Samsung S24 3.79 times. It suits travellers and commuters who need multiple phone recharges between wall outlets. The integrated 5.98 inch USB-C cable removes the need to carry a separate lead.

Sustained output behaviour

ActiveShield 2.0 monitors temperature three million times per day and adjusts power delivery to maintain stable 30W output during extended charging sessions. The 20W input capability recharges the power bank itself quickly so it is ready for the next cycle without long downtime.

Deciding specification

The single built-in USB-C cable means the unit can only charge one device at a time and cannot accept a second cable for simultaneous charging. Buyers who need to power two devices together or who prefer a detachable cable for replacement flexibility should consider a different model.

How it compares

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

Price $31.99
Cheaper than about 65% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameAnker
Product lineZolo
Model nameA1689
Part numberA1689
Total capacity20,000 mAh
Product typePower Bank
Product colorBlack
Ports & slots
Output type30 W
Power
Battery chemistryLithium Polymer
Voltage20 V
Size & build
Measurements4.72 × 2.89 × 1.24 in
Product weight0.8 lb (0.36 kg)
Compatibility
Compatible phone brandsApple
Compatible phone modelsiPhone

Other versions of this model

5 more in the same range

Questions about this item

How warm does the 20000 mAh unit get during continuous 30 W output?

ActiveShield 2.0 monitors temperature 3 million times per day and adjusts power output to keep the power bank running reliably during extended use.

What cable or adapter is needed to recharge the power bank at its 20 W input speed?

A USB-C charger capable of 20 W or higher is required; the built-in 5.98-inch USB-C cable handles the connection so no extra cable is needed.

Will the built-in USB-C cable charge an iPhone 15 at the advertised 30 W rate?

Yes, the integrated cable supports the full 30 W output, delivering 0 to 57 % in 30 minutes on an iPhone 15.

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