Xiaomi External battery Power Bank Borofone BJ18 2xUSB 20000mAh black

20000 mAh, 10 W, 74 Wh
CHF0.31/1Wh
Ratings
BrandMore from Xiaomi
Delivered between 3.1.2026 and 7.1.2026
More than 10 pieces in stock at supplier
Free shipping starting at 50.–

Product details

The external battery Power Bank Borofone BJ18 is a powerful and practical solution for mobile energy supply. With an impressive battery capacity of 20,000 mAh, it provides enough energy to charge various devices such as smartphones, tablets, and other USB-powered devices multiple times. The Power Bank is equipped with two USB ports, allowing for simultaneous use so that multiple devices can be charged at the same time. Its compact and lightweight design, weighing only 0.28 kg, makes it an ideal companion for on-the-go, whether traveling, camping, or in everyday life. The elegant black color gives the Power Bank a modern and timeless appearance. Thus, the Borofone BJ18 Power Bank is a reliable and efficient solution for anyone who values mobility and performance.

Key specifications

USB ports
2 x USB
Additional properties
LED battery status indicator
Weight
428 g
Capacity
20000 mAh
Power capacity
74 Wh
Item number
25249027

General information

Manufacturer
Xiaomi
Category
Powerbanks
Manufacturer no.
BJ18 COOLMY CZARNY
Release date
28.3.2023

Colour

Colour
Black
Exact colour description
czarny

Material

Material group
Plastic
Material
ABS + PC + lithium polymer battery cell

Power bank properties

Powerbank type
Powerbank
Additional properties
LED battery status indicator

Connections

USB ports
2 x USB

Power supply

output voltage
5 V
Electric current output
2 A
Nominal power
10 W

Battery properties

Capacity
20000 mAh
Power capacity
74 Wh

Origin

Country of origin
China

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Length
148 mm
Width
68 mm
Height
28 mm
Weight
428 g

Package dimensions

Length
19.60 cm
Width
11.60 cm
Height
3.20 cm
Weight
502 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Powerbanks» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 20.Hermex
    1.3 %
  • 20.Ugreen
    1.3 %
  • 20.Xiaomi
    1.3 %
  • 24.Anker
    1.4 %
  • 24.Elzle
    1.4 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.Verbatim
    0 days
  • 1.Verico
    0 days
  • 1.Xiaomi
    0 days
  • 1.Xlayer
    0 days
  • 1.Xtorm
    0 days

Return rate

How often is a product of this brand in the «Powerbanks» category returned?

Source: Digitec Galaxus
  • 33.Anker
    1.8 %
  • 33.Aukey
    1.8 %
  • 35.Xiaomi
    1.9 %
  • 36.Elzle
    2 %
  • 36.Goobay
    2 %
Source: Digitec Galaxus