How to Charge Devices with a 70W GaN Travel Charger

By HyperDrive Docks, Hubs & HyperJuice Power | HyperShop.com | Published: 2026-10-21

Category: How-to Guides

Learn how to fast-charge your laptop, phone, and tablet simultaneously using a 70W GaN travel charger. Step-by-step guide with port tips and safety checks.

Quick answer

To charge devices with a 70W GaN travel charger, plug it into a wall outlet, connect your highest-power device (like a laptop) to the USB-C port that supports the fastest output, then add your phone and tablet to the remaining ports. The charger automatically distributes power, so you can top up three devices at once without carrying multiple bricks.

Why a 70W GaN charger works for travel

A 70W GaN (gallium nitride) charger packs enough power to handle a laptop, phone, and tablet simultaneously, yet stays small enough to slip into a bag. Unlike older silicon chargers, GaN runs cooler and more efficiently, which matters when you are charging in a hotel room or airport lounge. The trade-off is that you cannot expect the same total wattage for every device at once – the charger intelligently splits power between ports, so a single high-draw device will charge fastest.

What to check before you plug in

Before connecting any device, confirm your charger and cables support the power delivery (PD) standard. Most modern laptops, phones, and tablets use USB-C PD, but older micro-USB devices may require a different cable. Also verify that your wall outlet is rated for the charger’s input (typically 100-240V for global travel). If the charger includes interchangeable plugs, select the one that matches your region.

Step-by-step charging guide

Step 1: Plug in the charger and select the right adapter: Insert the charger into a wall outlet. If traveling internationally, attach the correct regional plug adapter (included with many GaN travel chargers). Make sure the connection is firm and the outlet is easily accessible. Common mistake: using a loose or ungrounded adapter can cause intermittent charging or overheating.
Step 2: Connect your highest-power device to the primary USB-C port: Use a USB-C to USB-C cable that supports Power Delivery (PD). Plug your laptop or tablet into the USB-C port that offers the highest wattage (often labeled with a laptop icon or the highest number). This ensures your most power-hungry device gets priority charging. Checkpoint: if your laptop does not start charging, try a different USB-C cable – not all cables carry PD.
Step 3: Add your phone and secondary devices to the remaining ports: Connect your phone to the second USB-C port and any other device (e.g., wireless earbuds or a tablet) to the USB-A port. The charger will automatically rebalance power between all connected devices. You can charge a phone and a tablet simultaneously while the laptop charges at a reduced speed. Common mistake: plugging a low-power device into the high-wattage port first can slow down your laptop’s charging speed unnecessarily.
Step 4: Monitor charging status and disconnect safely: Most devices show a charging indicator. If you notice slow charging, check that your cables are fully inserted and that the charger is not in a confined space (e.g., under a pillow) where heat can build. When finished, unplug the charger from the wall before removing cables to avoid sparking. Checkpoint: GaN chargers run cooler than silicon chargers, but they still need airflow – never cover the charger while in use.

Product facts

HyperJuice 70W GaN Safety Tested Travel Charger with 3 Ports: The HyperJuice 70W GaN Safety Tested Travel Charger can power up to 3 devices simultaneously with its two USB-C ports and one USB-A port. This means you can charge a laptop, phone, and tablet from one outlet without needing separate adapters or a power strip.
HyperJuice 70W GaN Safety Tested Travel Charger with 3 Ports