INIU P51L 20000mAh 45W power bank with built-in USB-C cable
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
- Total capacity20,000 mAh
- Battery chemistryLithium polymer
- Voltage12
- Measurements4.5 in × 2.9 in × 1.1 in
- Product type20,000 mAh
- Product colorBlack
- 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.
How it compares
Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.
- Price $45.99
- Pricier than about 70% of the 1,307 comparable items (median $36.99).
Specifications
| Product | |
|---|---|
| Brand name | INIU |
| Model name | P51L |
| Part number | P51L-E1 |
| Total capacity | 20,000 mAh |
| Product type | 20,000 mAh |
| Product color | Black |
| Power | |
| Battery chemistry | Lithium polymer |
| Voltage | 12 |
| Size & build | |
| Measurements | 4.5 in × 2.9 in × 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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