# NOBIS 45W 20,000mAh Power Bank, 4 Outputs

Source: https://www.ranked10.co.uk/tech/best-20000mah-power-banks/nobis-45w-20000mah-power-bank
Ranked #5 in "Best 20000mAh Power Bank: 10 Ranked by Real Charge Counts": https://www.ranked10.co.uk/tech/best-20000mah-power-banks

- Price: £26.34 (checked on Amazon UK on 2026-09-18)
- Amazon rating: 4.3 from 5,335 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0D63HF7Z4?tag=ranked10-21

The NOBIS Power Bank Fast Charging 45W 20000mAh is the fifth entry in this guide. At £26.34 it carries a 4.3 rating from 5,335 ratings, and its pitch is speed: 45W over USB-C with PD 3.0 and QC 3.0, enough to take an iPhone 15 Pro from 0% to 60% in 30 minutes, or a MacBook Pro 14-inch from 0% to 47% in the same half hour.

The listing's own specification fields tell a smaller story. Voltage is given as 5 Volts, and Amperage and Output Current as 3 Amps. Five times three is 15W, not 45W, and nothing in the listing explains where the other 30W would come from. On weight the numbers are easier to believe: 392 g item weight and 376.2 g battery weight, which places it near the heavy end of this guide's range rather than anywhere near the 40 g battery one listing here claims for the same capacity. Everything on this page is taken from the Amazon listing, not from testing we carried out ourselves.

## Specification

| Field | Value |
|---|---|
| Price | £26.34 |
| Rating | 4.3 out of 5, from 5,335 ratings |
| Claimed capacity | 20,000mAh |
| Advertised charging | 45W maximum via USB-C, plus PD 3.0 and QC 3.0 |
| Voltage | 5 Volts (as listed) |
| Amperage and output current | 3 Amps (as listed) |
| Battery weight | 376.2 Grams (as listed) |
| Ports | 4 — 2 USB-A and 2 USB-C (as listed) |

## Questions people ask

**How fast does the NOBIS power bank charge a phone?**

The listing claims 45W over USB-C, with an iPhone 15 Pro going from 0% to 60% in 30 minutes and a MacBook Pro 14-inch from 0% to 47% in 30 minutes.

**Does the 45W claim match the other numbers in the listing?**

No. The same listing gives Voltage as 5 Volts and Amperage and Output Current as 3 Amps, which multiply to 15W. The listing does not explain the difference.

**How long does the NOBIS take to recharge?**

The listing states 2 hours, using the USB-C port, which it says accepts 45W maximum input.

**How heavy is the NOBIS 20,000mAh power bank?**

The listing gives 392 g as item weight and 376.2 g as battery weight.

**How many devices can it charge at once?**

Four. The NOBIS has 2 USB-A and 2 USB-C ports, and the listing says 4 devices can share the power supply without queuing.

**Can I take it on a plane?**

The listing describes the 20,000mAh pack as airline approved. That is the listing's claim; we have not verified it independently.