2026-07-06

How to Choose a Charger: The Complete Buying Guide

Wattage, ports, protocols, GaN — choosing a charger can be confusing. This guide breaks down everything you need to know to choose the right charger.

Step 1: Check Your Device

Start by checking what your device supports:

  • **Phones**: Most support 20–30W PD fast charging
  • **Tablets**: iPad Pro supports up to 30W; iPad Air ~20–30W
  • **Laptops**: Check the original charger wattage (45W, 65W, 100W, 140W)
  • **Multiple devices**: Add up the power needs

Step 2: Choose the Wattage

Match the charger wattage to your most power-hungry device:

  • **20W**: Phones and earbuds
  • **30W**: Phones and small tablets
  • **45W**: Ultrabooks (MacBook Air)
  • **65W**: 13–14″ laptops (most popular)
  • **100W**: 15–16″ laptops and multi-device
  • **140W**: MacBook Pro 16″ fastest charging (PD 3.1)

A higher-wattage charger is always safe — it only delivers what your device requests.

Step 3: Consider Ports

  • **Single port**: Smallest, most affordable — for one device
  • **Dual port**: Charge two devices (laptop + phone)
  • **Triple port**: Charge laptop + phone + tablet simultaneously

Multi-port chargers distribute power intelligently. Check the power distribution specs.

Step 4: Look for GaN

Choose GaN over silicon for:

  • Smaller size (40–50% smaller)
  • Cooler operation
  • Higher efficiency
  • Better reliability

GaN II (Navitas) is the latest generation with the best performance.

Quick Reference

| Device | Recommended Wattage |

|——–|———————|

| Phone | 20–30W |

| iPad | 30–35W |

| MacBook Air | 45W |

| 13–14″ Laptop | 65W |

| 15–16″ Laptop | 100W |

| MacBook Pro 16″ | 140W (PD 3.1) |

FAQ

Can I use one charger for all my devices?

Yes, if the wattage is high enough. A 100W multi-port GaN charger can power a laptop, phone, and tablet simultaneously with intelligent power distribution.

Only up to your device’s maximum supported power. A 100W charger will not charge a 20W phone faster than a 20W charger — it delivers only what the phone accepts.

No. Chargers vary in wattage, protocols (PD, PPS, QC), port count, and technology (GaN vs silicon). Always check the specs match your device’s requirements.

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