Your laptop is powerful. Your charger might be secretly throttling it.
This is one of the most overlooked performance issues in modern computing. When a laptop doesn't receive enough wattage from its charger, it enters a power-saving mode that limits CPU performance — even while plugged in. Here's what's happening and how to fix it.
How Laptop Charging Throttling Works
Modern laptops have a power management system that balances performance against available power. When the charger delivers less wattage than the laptop needs at full performance, the system throttles the CPU to prevent the battery from draining while plugged in.
The result: your laptop runs slower while plugged in than it would with the correct charger. This is especially common when using phone chargers or low-wattage USB-C chargers with laptops.
The Wattage Requirements by Laptop
- MacBook Air M3: Needs 30–67W for full performance
- MacBook Pro 14": Needs 67–96W for full performance
- Dell XPS 13: Needs 45–65W for full performance
- Lenovo ThinkPad X1 Carbon: Needs 65W for full performance
- HP Spectre x360: Needs 65W for full performance
How to Tell If Your Laptop Is Being Throttled
On Mac: Open Activity Monitor → CPU tab. If CPU usage is high but performance feels sluggish, check your charger wattage. On Windows: Use HWiNFO or CPU-Z to monitor CPU clock speeds while plugged in.
A simple test: run a demanding task (video export, large file transfer) while plugged in. If the battery percentage drops despite being connected, your charger isn't delivering enough power.
The Fix: Match Your Charger to Your Laptop
The NexCharger 65W GaN Charger delivers 65W via USB-C PD — enough for full-performance charging on MacBook Air, Dell XPS 13, Lenovo ThinkPad X1, HP Spectre, and most other thin-and-light laptops.
At 65W, your laptop gets the power it needs to run at full speed while simultaneously charging the battery. No throttling. No compromises.
What About the NexCharger 20W?
The NexCharger 20W Travel Adapter is not designed for laptop charging — it's optimized for phones and tablets. For laptops, the 65W is the right tool.
The Performance Upgrade You Didn't Know You Needed
Upgrading your charger might be the cheapest performance upgrade available for your laptop. If you've been using a low-wattage charger, switching to the NexCharger 65W could make your laptop feel noticeably faster — without touching the hardware.
Get the NexCharger 65W GaN Charger and unlock your laptop's full potential.