DIAMUAR P056 power bank 20000mAh 45W built-in USB-C cable 3W flashlight
A 20000mAh power bank delivers 45W fast charging through a built-in USB-C cable and includes a 3W flashlight
- Total capacity20,000 mAh
- Battery chemistryLithium polymer
- Voltage3.7 V
- Amperage3 A
- Measurements5.75 in × 2.87 in × 1.25 in
- Product type20,000 mAh
- 45W fast charging powers devices quickly
- built-in braided USB-C cable tested to 30000 bends removes extra cords
- 20000mAh capacity delivers about 3.8 phone charges
- digital display shows remaining power at a glance
- 3W flashlight adds emergency light in a 0.88 lb pocket-sized unit
What this power bank delivers
The DIAMUAR P056 is a 20000mAh lithium-polymer power bank rated at 45W output. It suits commuters, travellers and anyone needing emergency backup for phones, tablets and lightweight laptops. A built-in braided USB-C cable and a 3W flashlight add convenience for daily carry and outdoor use.
Check your devices before ordering
Confirm your hardware accepts USB-C Power Delivery up to 45W for fastest charging. The built-in cable is USB-C only, so devices with Lightning or Micro-USB ports will need their own adapter or cable. Total simultaneous draw across the two USB-C ports and one USB-A port is shared, so peak speed may drop when three devices are connected.
Replaces separate chargers and cables
This unit consolidates a high-capacity battery, a 45W USB-C charger and a durable cable into one pocket-sized block. It removes the need to pack a wall charger and loose cords for short trips. The jump is worth it if you regularly drain a phone and a laptop on the same day and want a single recharge that refills the bank in about three hours.
How it compares
Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.
- Price $52.99
- Pricier than about 81% of the 1,307 comparable items (median $36.99).
Specifications
| Product | |
|---|---|
| Brand name | DIAMUAR |
| Model name | P056 |
| Part number | P056 |
| Total capacity | 20,000 mAh |
| Product type | 20,000 mAh |
| Product color | Black |
| Power | |
| Battery chemistry | Lithium polymer |
| Voltage | 3.7 V |
| Amperage | 3 A |
| Size & build | |
| Measurements | 5.75 in × 2.87 in × 1.25 in |
| Product weight | 0.88 lb (0.4 kg) |
Questions about this item
Does the power bank include a charging cable or do I need to buy one separately?
The unit has a built-in braided USB-C cable tested to 30000 bends, so no extra cord is required for USB-C devices; other cable types are not included.
Which output port should I use to get the 45W fast charging speed?
Both USB-C ports deliver up to 45W each, while the USB-A port is limited to 22.5W; use either USB-C port for the highest charging rate.
How many full phone charges can I expect from the 20000mAh capacity?
The manufacturer estimates about 3.8 complete cycles for iPhone 17 Pro, 3 cycles for iPhone 16 Plus, and 2.8 full charges for Galaxy S25+.
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