Wireless Charging Explained

Introduction

Wireless charging is convenient but can be confusing. Here's everything you need to know about wireless charging.

How It Works

Electromagnetic Induction

Wireless charging uses electromagnetic fields to transfer energy between two coils:

• Sender coil: In the charging pad
• Receiver coil: In your device
• Creates magnetic field
• Energy transfers wirelessly

Standards

Qi (pronounced "chee")

• Universal standard for wireless charging
• Used by Apple, Samsung, Google
• Up to 15W charging
• Interoperable between brands

Other Standards

• PMA: Older, less common
• Rezence: Rare, higher power
• Qi is dominant

Charging Speed

Qi Speed Levels

• 5W: Basic slow charging
• 7.5W: iPhone standard
• 10W: Samsung fast wireless
• 15W: Maximum Qi speed

Factors Affecting Speed

• Charger wattage
• Device support
• Case thickness
• Alignment
• Temperature

Compatibility

What Works with Qi

• iPhone 8+
• Samsung Galaxy S6+
• Google Pixel 4+
• Many Android phones
• Wireless earbuds (some)
• Smartwatches (some)

Case Compatibility

• Thin cases (3mm): Usually OK
• Metal cases: Won't work
• Official cases: Best compatibility
• Magnetic cases: Often best

Charging Pads

Types

• Flat pads: Basic charging
• Stands: View while charging
• Multi-device: Charge multiple
• Car mounts: In-car charging

Recommended

• Apple: MagSafe Charger
• Samsung: Wireless Charger Duo
• Anker: Wireless Chargers
• Belkin: Boost↑Charge

Tips

1. Center your device for best alignment
2. Remove thick cases if not charging
3. Use the right adapter (15W+)
4. Don't use while charging (generates heat)
5. Check for debris on pad

Pros and Cons

Pros

• Convenient
• No cables
• Universal standard
• Safe

Cons

• Slower than wired
• Heat generation
• Must align
• Not all devices

Verdict

Wireless charging is perfect for nightstands and desks. Use wired for fast charging when needed.