For most people charging a smartphone overnight, a 20W to 30W USB-C port is a useful target.

If you also want to charge tablets or laptops, higher output may make more sense.

The important point is that USB-C describes the connector, not the charging speed.

15W

A 15W port can handle basic charging duties.

It may be perfectly adequate when you mostly charge overnight and speed is not important.

However, it is not particularly future-proof if you regularly use devices capable of faster charging.

20W

Around 20W is a practical starting point for modern phone charging.

For a bedside setup where your main device is a smartphone, this may be all you need.

30W

A 30W USB-C port provides more flexibility.

It is a good middle ground for phones, tablets, and some smaller USB-C electronics.

For many buyers, this is the sweet spot.

45W

At 45W, the charging system becomes more useful for larger devices.

Some tablets and lightweight laptops can make good use of this level of power, depending on their requirements.

65W

A 65W USB-C PD port is attractive if your bedroom doubles as a place where you occasionally charge a laptop.

Not every computer can run or charge properly from 65W, so check the laptop manufacturer's requirements first.

Can USB-C go higher?

Yes.

The USB Power Delivery standard supports substantially higher levels than the ports typically found in furniture.

But a nightstand does not need extreme charging power just because the USB standard supports it.

Your real question should be: what will I actually plug into this port?

Pay attention to shared power

One detail that is easy to miss is whether multiple ports share the advertised output.

For example, a charging module might provide one maximum figure when a single device is connected but split the available power when two devices charge simultaneously.

Check the manufacturer's specifications carefully.

Don't buy based on the connector alone

A USB-C opening in a nightstand may look modern while delivering relatively modest power.

Look for explicit wattage and references to USB Power Delivery where relevant.

A nightstand with clearly specified USB-C charging is preferable to one that simply lists "USB ports" without explaining their output.

What wattage should you choose?

For most bedrooms:

  • Phone only: 20W+ is a sensible target.
  • Phone and tablet: consider 30W+.
  • Laptop charging: look at 45W or 65W+, depending on the computer.

If you're buying furniture you expect to keep for years, choosing a USB-C charging nightstand with a higher-output port can provide more flexibility as your devices change.

Bottom line

You do not need the highest wattage available.

You need enough output for your devices.

For a typical modern bedside setup, 20W to 30W is useful for phones, while laptop users should investigate 45W, 65W, or whatever their particular computer requires.