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Black rectangular power bank with built-in USB-C cable, compact 4.5 by 2.9 by 1.1 inch form factor

INIU P51L 20000mAh 45W power bank with built-in USB-C cable

SKU CH-0R1C-XQXF5 MPN P51L

A 20000mAh lithium-polymer power bank delivers up to 45W fast charging with a built-in USB-C cable and charges three devices at once

  • Type20000 milliamp_hours
  • ColorBlack
  • Capacity20000 milliamp_hours
  • Chemicallithium_polymer
  • Volt12
  • Dimension4.5 in x 2.9 in x 1.1 in
  • 45W fast charging powers iPhone 16 to 70% in 25 minutes
  • 20000mAh capacity fits in ultra-compact 4.5 x 2.9 x 1.1 inch design
  • Built-in USB-C cable means grab-and-go charging without extra cords
  • 38 million global users trust INIU safety with 3-year care program
  • Charges three devices simultaneously — phone, tablet and more at once

Compact 20000mAh Power Bank with Built-In Cable

This 20000mAh lithium polymer power bank delivers up to 45W output and includes a built-in USB-C cable for grab-and-go charging. It supports PD and QC protocols to fast-charge phones, tablets and other USB-C devices. The compact 4.5 x 2.9 x 1.1 inch form factor fits easily in a bag or pocket.

Check Your Devices and Charging Habits

Verify that your phone or tablet accepts USB-C Power Delivery up to 45W to use the full output. Note that only the built-in cable and USB-C port are available for output, so devices needing USB-A or Lightning will require an adapter. Recharging the bank itself requires a USB-C wall charger; a 27W charger refills it in about 3.9 hours while a 15W charger takes roughly 6.8 hours.

Ideal for Multi-Device Travellers.

The 20000mAh capacity suits travellers who need several phone charges — roughly four for a typical 3279mAh handset — and can top up three devices at once. Buyers who want more storage for multiple laptop charges or who need higher wattage for power-hungry notebooks should look at something else. The 100Wh rating meets TSA carry-on limits for air travel.

Highlights

  • 45W fast charging powers iPhone 16 to 70% in 25 minutes
  • 20000mAh capacity fits in ultra-compact 4.5 x 2.9 x 1.1 inch design
  • Built-in USB-C cable means grab-and-go charging without extra cords
  • 38 million global users trust INIU safety with 3-year care program
  • Charges three devices simultaneously — phone, tablet and more at once

Specifications

BrandINIU
ModelP51L
Type20000 milliamp_hours
ColorBlack
Part NumberP51L-E1
Capacity20000 milliamp_hours
Chemicallithium_polymer
Volt12
Dimension4.5 in x 2.9 in x 1.1 in

Questions about this item

What comes in the box with the INIU P51L and what must I buy separately?

The power bank has a built-in USB-C cable for charging devices and recharging the unit itself. No extra cable is included, so you will need a separate USB-C wall charger to refill the bank.

How do I choose between the listed versions or capacities for the INIU P51L?

The P51L is offered in a single 20000 mAh capacity with 45 W maximum output. There are no alternative capacities or power levels to select.

What does the 45 W headline figure mean once the power bank is in use?

It delivers up to 45 W through the USB-C port, charging an iPhone 16 to 70 % in 25 minutes or a Samsung S25 Ultra to 80 %, and supports three devices at once.

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