Does fast charging damage the battery?

No. Phones made from 2020 onwards manage charging speed and temperature themselves, so fast charging is safe for everyday use. If you want to stretch battery life as far as possible, wired charging at a moderate 10–20 W is the gentlest option.

Can I use any USB-C charger?

Yes, USB-C is a common standard. Fast charging, however, only works with a compatible charger (Quick Charge, USB-PD, SuperVOOC). Always use a certified charger — an uncertified one charges slowly and can be unsafe.

Wireless or wired charging — which is better?

Wired is faster and more efficient, because less energy turns into heat. Wireless is more convenient but slower and runs warmer. For long-term battery health wired is slightly better, though with current technology the difference is small.

How powerful a charger do I need?

It depends on the phone: iPhone accepts 20–27 W, Samsung Galaxy 25–45 W, and OnePlus and Xiaomi flagships 80–120 W. There is no need to buy the most powerful one — 20–30 W is enough for most phones and works with everything.

What power bank capacity should I choose?

10,000 mAh covers normal use — two to three full charges. If you travel a lot, 20,000 mAh is the better choice. Check the output power too: 20 W or more means the power bank can fast charge.

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Borofone Power Bank 20000mAh BJ78A Clever - 2xUSB - white

Power Banks

Borofone Power Bank 20000mAh BJ78A Clever - 2xUSB - white

Name: Borofone Power Bank 20000mAh BJ78A Clever - 2xUSB - white
Brand: Borofone
SKU: 6960726
Price: 12.99 EUR
Availability: InStock

SKU: 6941991121500

Price

€12.99

Delivery

Pick up at our store

August 19 (FREE)

Pick up at Omniva, LP Express, SmartPosti parcel locker

August 20-22 (from 2.29 €) (FREE from 30 €)

Delivery to home / office

August 20-22 (from 4.99 €) (FREE from 50 €)

Color

White

Protection

Reliable device protection

Quality

Premium materials

Perfect Fit

Designed for your device

Description

Borofone BJ78A Clever 20000mAh power bank

The lithium-polymer battery has a capacity of 20000mAh (74Wh) and a rated capacity of 11000mAh. Two USB-A outputs charge two devices at once, while USB-C and Micro-USB inputs offer flexible recharging. An LED displays the remaining battery level.

Input: USB-C or Micro-USB, 5V/2A
USB-A1 and USB-A2 output: 5V/2A each; total: 5V/2A
Housing: ABS and PC; size: 146 × 69 × 40mm; weight: 600g
Colour: white