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.

NF622 HDMI Cable Tester

Description

The NF622 HDMI cable tester is designed to test, troubleshoot and verify HDMI cables with Type A and Type C connectors.

Features

Tests Type A - A, A - C, C - A and C - C cables.
Detects miswires, short circuits, open circuits and crossover wiring.
Checks continuity, pin mapping and the correct configuration.
Displays the status of all 19 pins and the shield connection on both the master and remote units; four status LEDs identify the wiring result.
The loopback function allows wire-map testing with the master unit alone.
Fast scan, slow scan and manual step-by-step test modes.

Specifications

Supported cables: HDMI Type A and Type C cables conforming to versions 1.0, 1.1, 1.2, 1.2a, 1.3, 1.3a, 1.3b, 1.3c, 1.4 and 1.4a, including Category 1 and Category 2 cables.
Supported test: 19 pin wire map and shield detection.
Master-unit interfaces: HDMI Type A x 2 and Mini HDMI Type C x 1.
Remote-unit interfaces: HDMI Type A x 1 and Mini HDMI Type C x 1.
Test configurations: master-unit loopback, or master and remote units.
Test distance: under 50 meters.
Indicators: 19 LEDs and one shield LED on both the master and remote units, plus an audible beeper.
Low-battery indication: 6.0 V.
Power source: one DC 9 V battery, NEAD 1604/6F22 (not included).
Storage temperature: -10 C to 55 C.
Warranty: 24 months.

Technical Specifications

Warranty

24 mėn.