ViewSonic P512 20000mAh 22.5W Power Bank Black
A 20000mAh lithium-polymer power bank with 22.5W fast charging, three USB-C outputs, built-in cable lanyard, flashlight and digital display
- 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
- True 22.5W fast charge reaches 70% on Samsung S25 or 60% on iPhone 16 in 25 minutes
- Pocket-size 20000mAh lithium polymer cell delivers four full phone charges
- Detachable nylon lanyard doubles as built-in USB-C cable lasting three times longer than plastic
- Flight-approved capacity clears airport security plus integrated flashlight for emergencies
- Three-year hassle-free replacement backed by 38 million global SafeCharge users
Pocket-Size 20000mAh Capacity
The ViewSonic P512 delivers a true 20000mAh lithium-polymer cell in a compact 4.1 in x 2.8 in x 1.2 in black chassis. It targets travellers and daily commuters who need roughly four full phone charges without carrying a bulky brick. The integrated digital display shows remaining capacity at a glance.
Detachable Nylon Lanyard Cable
A built-in USB-C cable doubles as a woven nylon lanyard, removing the need to pack a separate cord. Two additional USB-C ports sit alongside it, so three devices can charge simultaneously from the single 12 V source. The 5.4-hour recharge time refills the bank overnight.
Sustained 22.5W Output With Thermal Sensors
Under continuous load the bank maintains 22.5W fast charging, taking a compatible handset to 70% or 60% in 25 minutes while active thermal sensors dissipate heat. Over-charging protection stops current flow once a device reaches full capacity. A built-in flashlight adds utility during power cuts or low-light travel. TSA-approved 20000mAh rating clears airport security.
How it compares
Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.
- Price $29.99
- Cheaper than about 70% of the 1,307 comparable items (median $36.99).
Specifications
| Product | |
|---|---|
| Brand name | ViewSonic |
| 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
How many full phone charges can the 20000mAh capacity deliver before it needs recharging?
The supplier highlights note this dense cell design provides roughly four full phone charges from the 20000mAh capacity.
Does the built-in thermal management keep the unit cool during continuous 22.5W fast charging?
Built-in thermal sensors actively dissipate heat so the power bank stays safe and cool while delivering 22.5W output.
Which devices can I charge directly using the integrated USB-C lanyard cable?
The detachable nylon USB-C lanyard works with any USB-C device; Apple users can plug into the two extra USB-C ports.
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