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Rectangular Pearl Black power bank with built-in cables, slim profile

GrnOas.E K51-26-F power bank 10000mAh 22.5W Pearl Black

SKU CH-PGE1-9P3ZZ MPN K51-26-F

A 10000mAh lithium-polymer power bank with built-in Lightning and USB-C cables, plus USB-A and USB-C ports, delivering up to 22.5W output for four devices simultaneously

  • Total capacity10,000 mAh
  • Battery chemistryLithium polymer
  • Voltage5 V
  • Measurements5.9 in × 2.7 in × 0.75 in
  • Product type10,000 mAh
  • Product colorPearl Black
  • Charges four devices at once with two built-in cables and two ports
  • Delivers up to 22.5W fast charging via PD and QC technologies
  • Recharges quickly through USB-C or Micro-USB inputs
  • Slim 5.9 x 2.7 x 0.75 in design weighs only 8.4 oz
  • Smart chip protects against over-charge, over-voltage, over-current and short circuits

Portable Power Bank for Everyday Use

The GrnOas.E K51-26-F is a 10000mAh lithium polymer power bank designed for users who need reliable backup power for smartphones and tablets. It includes built-in Lightning and USB-C cables plus USB-A and USB-C ports, allowing four devices to charge at once. The slim 5.9 x 2.7 x 0.75 inch profile fits easily in a bag or pocket.

Charging Limits of the USB Interface

Maximum output reaches 22.5W through the integrated USB-C cable, while the USB-C port delivers up to 20W and the USB-A port up to 18W. The Lightning cable is limited to 12W output. Recharging the power bank itself accepts up to 18W via the USB-C or Micro-USB inputs, so a full top-up takes several hours with a standard charger.

Capacity Decides Suitability

At 10000mAh the unit typically provides two to three full phone charges, which covers a day trip or overnight stay but falls short for multiple tablets or a laptop. Buyers who need more storage for extended off-grid use or laptop charging should consider a higher-capacity model. Airline approval makes it safe for carry-on baggage.

How it compares

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

Price $21.99
Cheaper than about 88% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameGrnOas.E
Model nameK51-26-F
Total capacity10,000 mAh
Product type10,000 mAh
Product colorPearl Black
Power
Battery chemistryLithium polymer
Voltage5 V
Size & build
Measurements5.9 in × 2.7 in × 0.75 in

Questions about this item

Which capacity should I pick for daily phone top-ups?

The 10000mAh model gives roughly two full phone charges while staying slim at 5.9 x 2.7 x 0.75 in and 8.4 oz.

What does the 22.5W rating deliver in real use?

It powers the built-in USB-C cable at up to 22.5W, the built-in Lightning cable at 12W, the USB-C port at 20W and the USB-A port at 18W.

How fast can I recharge the power bank itself?

The USB-C input accepts up to 18W and the Micro-USB input up to 18W, so a full recharge takes about 3–4 hours with a compatible charger.

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