INIU P512 20000mAh 22.5W Power Bank Black
A 20000mAh lithium-polymer power bank delivers 22.5W fast charging via built-in USB-C cable and extra ports
- Total capacity20,000 mAh
- Battery chemistryLithium polymer
- Voltage12 V AC
- Output typeUSB Type C * 2 + USB C *1
- InputOutput: USB Type C * 2 + USB C *1
- Measurements4.1 in × 2.8 in × 1.2 in
- Pocket-sized 20000mAh delivers up to four phone charges
- Detachable nylon USB-C lanyard cable outlasts standard cords
- 5W fast charge reaches 70% on Samsung S25 in 25 minutes
- TSA-approved capacity plus built-in flashlight for travel
- 18-layer SmartProtect system monitors temperature for safe daily use
Pocket-Sized 20000mAh Power Bank
The INIU P512 packs a 20000mAh lithium polymer cell into a 4.1 in x 2.8 in x 1.2 in black chassis. It delivers up to 22.5W output through two USB Type-C ports and a built-in USB-C cable that doubles as a detachable nylon lanyard. The unit weighs approximately 11 oz and includes a built-in flashlight plus an 18-layer SmartProtect safety system.
Travellers needing multiple phone charges without
This power bank suits users who want roughly four full phone recharges from a pocketable device and value the convenience of an integrated cable. Buyers who need more than 20000mAh capacity, higher than 22.5W output, or wireless charging should look at larger or differently equipped units.
22.5W maximum output
The single spec that decides fit is the 22.5W peak power rating; it enables 25-minute charges to 70% on a Samsung S25 or 60% on an iPhone 16, but devices requiring 30W or more will not charge at their fastest speed.
How it compares
Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.
- Price $39.99
- Pricier than about 57% of the 1,307 comparable items (median $36.99).
Specifications
| Product | |
|---|---|
| Brand name | INIU |
| Model name | P512 |
| Part number | P512 |
| Total capacity | 20,000 mAh |
| Product type | 20,000 mAh |
| Product color | Black |
| Ports & slots | |
| Output type | USB Type C * 2 + USB C *1 |
| Input | Output: USB Type C * 2 + USB C *1 |
| Power | |
| Battery chemistry | Lithium polymer |
| Voltage | 12 V AC |
| Size & build | |
| Measurements | 4.1 in × 2.8 in × 1.2 in |
Questions about this item
Will the 20000mAh capacity still charge my older phone that only takes 5W input?
Yes, the bank negotiates the correct power level automatically, so a 5W phone will charge safely at its own speed.
How can I confirm the 22.5W fast charge is actually active after I plug in my Samsung S25?
The phone will show its fast-charge indicator and reach about 70% in 25 minutes when the battery is low.
Does the box include a wall charger for the 5.4-hour recharge, or do I need to buy one separately?
A wall charger is not included; you must supply a 20W USB-C charger to achieve the 5.4-hour recharge time.
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