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Black rectangular power bank with rounded edges, four LED indicators, two USB-A ports, USB-C and Micro-USB inputs

Anker

Anker PowerCore Essential 20000mAh Power Bank

SKU CH-A6R9-SBEFM

A 20,000mAh power bank with dual USB-A outputs, PowerIQ and VoltageBoost charging, trickle-charge mode for low-power accessories, and USB-C or Micro-USB recharge inputs

  • Compatible phone brandsApple; Samsung and more
  • Compatible phone modelsCompatible with iPhone 12 series, iPad mini 5, Android smart
  • Measurements6.22 × 2.93 × 0.76 in
  • Product typePower Bank
  • Details20,000 mAh
  • Product weight350g/12.32 oz
  • 20,000mAh capacity delivers over five iPhone XS charges
  • PowerIQ and VoltageBoost optimise output for each connected device
  • Twin USB-A ports charge two devices simultaneously
  • USB-C and Micro-USB inputs offer flexible recharging options
  • MultiProtect safety system guards against overcharge and short circuits

Anker PowerCore Essential 20000mAh

This Anker PowerCore Essential power bank delivers 20000mAh capacity for extended device runtime. It features dual USB-A output ports to charge two devices simultaneously. PowerIQ and VoltageBoost technologies provide optimised charging speeds. A USB-C input port allows recharging the power bank itself in approximately 10.5 hours with a 10W charger.

Ideal for multi-device users.

Travellers and commuters who need several phone charges away from wall sockets will benefit from the high capacity and twin ports. The trickle-charging mode supports low-power accessories such as earphones. Users requiring USB-C output to charge laptops or modern phones directly from the power bank should consider other models.

20000mAh capacity defines runtime

The 20000mAh cell provides more than five charges for an iPhone XS, almost five for a Samsung Galaxy S10, over four for an iPhone 11, and over two and a half for an iPad mini 5. Recharging via Micro USB takes approximately 20 hours with a 5W charger. Four LED indicators display remaining power level.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $21.99
Pricier than about 84% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameAnker
Product linePowerCore
Model namePowerCore Essential 20000
Product typePower Bank
Size & build
Measurements6.22 × 2.93 × 0.76 in
Product weight350g/12.32 oz
Compatibility
Compatible phone brandsApple; Samsung and more
Compatible phone modelsCompatible with iPhone 12 series, iPad mini 5, Android smartphones and tablets (including the Nexus 7), and other USB devices.

Questions about this item

What are the exact dimensions of the 20000mAh power bank?

The unit measures 6.22 x 2.93 x 0.76 in and weighs 350g or 12.32oz, so check your bag pocket or mount against those figures.

How do I recharge the power bank itself and which port is input only?

Recharge via the USB-C or Micro USB input ports; the USB-C port is input only and cannot charge other devices. Use a 10W charger for about 10.5 hours or a 5W charger for about 20 hours.

When should I recharge the internal 20000mAh battery to maintain its health?

Recharge the power bank at least once every 3 to 6 months if stored unused, and avoid leaving it fully depleted for long periods to preserve cell capacity.

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