Adding wireless charging to a desk does not always require cutting a charger installation hole through the visible tabletop. One option is to use an under-desk long-distance wireless charger mounted beneath a compatible tabletop, allowing a Qi-enabled smartphone to charge from the surface above.

However, successful through-table wireless charging depends on more than installation alone. B2B buyers and furniture manufacturers should evaluate tabletop thickness, material, charging distance, device alignment, phone cases, power configuration and mounting stability before selecting a solution for a furniture project.

Can You Add Wireless Charging to a Desk Without Drilling a Hole?

Yes. An under-desk wireless charger can be installed beneath a compatible tabletop instead of being inserted through a cut-out in the visible desk surface.

The basic configuration is:

Smartphone
↓
Tabletop
↓
Under-desk wireless charger

The phone remains on the visible tabletop while the charging hardware is positioned underneath.

This approach can be useful for office desks, conference tables, hotel furniture and other furniture projects where the buyer wants to add wireless charging while keeping the charging unit out of sight.

The important limitation is that not every wireless charger is designed to charge through a tabletop, and not every furniture surface is suitable for the same charging distance.

1. How Does Under-Desk Wireless Charging Work?

A conventional wireless charging pad normally requires the phone to sit directly on or very close to the charging surface.

An under-desk long-distance charger is designed for a different installation configuration.

The charging unit is positioned underneath the tabletop, while the compatible phone is placed above it on the visible surface.

For this configuration to work correctly, buyers need to consider the complete distance between the charging unit and the receiving device.

That is why charging distance becomes a critical specification for through-table applications.

2. What Does “Charging Through the Tabletop” Mean?

Through-table charging means that the wireless charging unit and smartphone are separated by the furniture surface.

The charger is not sitting directly beneath the phone with no material between them.

Instead, the configuration is:

Phone → Furniture Surface → Wireless Charger

This allows the electronic charging unit to remain hidden underneath the furniture.

However, through-table charging should not be interpreted as meaning that a charger will work through any desk at any thickness.

The actual furniture configuration must be evaluated.

3. Why Charging Distance Matters

The maximum supported charging distance determines whether an under-table charger is suitable for the intended furniture structure.

For example, SIYOUNI Model T20 is designed with a maximum charging distance of:

Up to 20mm

This makes it possible to install the charging unit beneath a compatible tabletop rather than cutting a charger-sized installation hole through the visible surface.

But up to 20mm should not be interpreted as:

Every 20mm tabletop will automatically provide the same charging result.

Actual performance can depend on the complete installation environment.

For B2B projects, maximum charging distance should therefore be treated as a selection specification that still requires application testing.

4. Tabletop Thickness Is Only One Factor

It is easy to focus only on desk thickness when evaluating an under-desk wireless charger.

Thickness matters, but it is not the only variable.

Buyers should evaluate:

• Actual tabletop thickness
• Tabletop material
• Distance between charger and phone
• Charger position
• Phone position
• Charging alignment
• Target smartphone
• Phone case
• Power configuration
• Installation accuracy

For furniture manufacturers, the most reliable approach is to test the charger using the actual tabletop material and thickness planned for production, or a representative sample with the same relevant characteristics.

5. Does the Desk Material Matter?

Yes. Furniture surfaces can differ significantly in construction and material.

A desk may use solid material, engineered panels, laminated structures or other furniture constructions. Surface treatments and the complete physical structure can also vary between projects.

For this reason, a maximum charging-distance specification alone should not be used to guarantee compatibility with every tabletop.

Instead, B2B buyers should test the intended furniture configuration with representative devices before final approval.

This is particularly important when the charging hardware will be hidden after furniture assembly or installation.

6. How Is an Under-Desk Wireless Charger Installed Without Drilling?

The installation principle can be relatively simple when the charger is designed for adhesive under-tabletop mounting.

Using SIYOUNI Model T20 as an example, the process is:

Step 1 — Select the Charging Area

Choose where the user should place the phone on the visible tabletop.

Step 2 — Identify the Corresponding Position Underneath

Locate the same charging area from the underside of the furniture.

Step 3 — Position the Wireless Charger

Align the center of the charging unit with the intended phone position above.

Step 4 — Attach the Charger Under the Tabletop

Use the charger's adhesive mounting surface to attach it beneath the selected charging area.

Step 5 — Connect the Required Power

Connect the charger according to its specified input configuration.

Step 6 — Test with Representative Devices

Place the intended Qi-compatible smartphone on the tabletop and confirm charging performance and positioning.

With this installation method, a charger-sized hole does not need to be cut through the visible tabletop.

7. Why Alignment Is Especially Important

Alignment matters with wireless charging in general, but it becomes particularly important when the charger is hidden beneath a tabletop.

The user cannot directly see the charging coil underneath the desk.

The phone therefore needs to be placed over the intended charging area with sufficient alignment for reliable charging.

Furniture designers should consider how users will identify that position.

Depending on the project, this may involve a visual charging symbol, surface marking or another positioning method incorporated into the furniture design.

The exact solution depends on the furniture project.

8. Do You Need to Mark the Charging Position on the Desk?

A visible positioning indicator can make an under-desk charging system easier to use.

Because the charger itself is hidden, users need to know where to place their phone.

For commercial furniture projects, buyers can consider whether the intended design needs:

• a charging symbol;
• a subtle surface marker;
• printed positioning information;
• another project-specific location indicator.

The marking method should be evaluated together with the furniture design rather than treated as part of the charging specification itself.

9. What About Phone Cases?

Phone cases add another variable to the charging configuration.

Because an under-desk installation already introduces distance between the charger and smartphone, buyers should test representative phones with the types of cases expected in actual use where relevant.

Do not assume that successful charging with an uncovered sample phone automatically represents every real-world device configuration.

For B2B furniture projects, representative-device testing is more useful than relying only on a theoretical maximum charging distance.

10. Under-Desk Wireless Charger vs Embedded Wireless Charger

These terms are sometimes used loosely, but the installation methods can be different.

Under-Desk / Under-Tabletop Charger

The charging unit is installed beneath the tabletop.

A suitable long-distance design allows charging through the furniture surface.

The charger itself does not need to occupy a cut-out through the visible tabletop.

Embedded Charger

An embedded installation may involve a recess, cut-out or other furniture modification so that the charger is installed into the furniture structure.

The exact installation method varies by product.

For buyers specifically trying to avoid cutting a charger installation hole through the visible desk surface, an under-tabletop through-surface charging configuration is the more relevant product type to evaluate.

11. Under-Desk Wireless Charger vs Desktop Charging Pad

The two formats serve different product applications.

             Comparison                      Under-Desk Wireless Charger     Conventional Desktop Charging Pad

A conventional pad may be more appropriate when portability and simple desktop use are the priority.

An under-desk charger becomes more relevant when furniture integration and a clear visible tabletop are important project requirements.

12. Where Can No-Drilling Wireless Charging Be Used?

Potential B2B applications include:

Office Desks

Wireless charging can be integrated into individual workstations while keeping the charging hardware below the desktop.

Conference and Meeting Tables

Charging areas can be incorporated into shared work surfaces without placing conventional charging pads across the table.

Hotel Furniture

Potential applications include bedside tables, desks and other compatible guest-room furniture.

Reception and Commercial Furniture

Under-surface charging may be considered where the visible furniture design should remain relatively clean.

Custom Furniture Projects

Furniture manufacturers can evaluate wireless charging as part of a broader integrated furniture design.

In every case, the intended material, thickness, installation and target devices should be tested before production approval.

13. Example: SIYOUNI Model T20

SIYOUNI Model T20 is one example of an under-desk long-distance wireless charging solution designed for furniture integration.

Its confirmed configuration includes:

Wireless Standard: Qi
Wireless Output: Up to 10W
Maximum Charging Distance: Up to 20mm
Installation Position: Under the Tabletop
Installation Method: Adhesive Mounting
Tabletop Drilling for Charger Installation: Not Required
Input: DC 12V/1.5A
Color: White
Material: ABS

The product is installed beneath the intended charging area using its adhesive mounting surface. A compatible Qi-enabled smartphone is then placed on the tabletop above the charger.

For furniture projects, the 20mm specification should still be evaluated together with the actual tabletop material, thickness, device, phone case and charging alignment.

14. What Should B2B Buyers Test Before Production?

Before approving an under-desk wireless charging solution for a furniture project, buyers should test the complete installation rather than evaluating the charger separately.

Recommended checks include:

• Confirm the exact charger model
• Verify the wireless charging standard
• Confirm the required input configuration
• Measure actual tabletop thickness
• Test the intended tabletop material
• Test charging at the planned installation distance
• Test representative smartphones
• Test representative phone cases where applicable
• Verify charger-to-phone alignment
• Determine how users will locate the charging area
• Evaluate adhesive mounting
• Check under-table installation stability
• Evaluate cable routing
• Test the complete furniture assembly
• Confirm branding requirements where applicable
• Confirm packaging requirements
• Compare the production configuration with the approved sample

For B2B furniture integration, the actual furniture sample is an important part of charger evaluation.

15. A Practical Selection Checklist

Before selecting an under-desk wireless charger, ask these questions:

1. What is the actual tabletop thickness?

2. What material and construction does the tabletop use?

3. What charging distance does the charger support?

4. Which smartphones are expected to use the charging area?

5. Will typical users have phone cases?

6. How will the charging unit be aligned underneath the tabletop?

7. How will users identify the correct phone placement area?

8. How will the charger be fixed beneath the furniture?

9. How will power and cables be routed?

10. Has the complete configuration been tested on a representative furniture sample?

These questions are generally more useful for furniture sourcing than comparing headline wireless wattage alone.

Frequently Asked Questions

Can wireless charging work through a desk?

It can when the wireless charger is specifically designed for through-surface charging and the furniture configuration falls within the product's supported charging conditions. Tabletop material, thickness, alignment, phone and phone case should be tested.

Can I install a wireless charger without drilling a hole in the desk?

Yes, an under-tabletop wireless charger designed for through-surface charging can be mounted beneath a compatible desk without cutting a charger installation hole through the visible tabletop.

How thick can a desk be for wireless charging?

This depends on the specific charger. SIYOUNI Model T20 has a confirmed maximum charging distance of up to 20mm, but this should not be interpreted as guaranteed compatibility with every 20mm tabletop.

Does the wireless charger sit on top of the desk?

Not with an under-desk configuration such as Model T20. The charging unit is attached beneath the tabletop while the phone is placed on the surface above.

How do you attach a wireless charger under a desk?

Model T20 uses an adhesive mounting surface to attach the charger beneath the selected charging area. Installation stability should be checked using the intended furniture configuration.

Is an under-desk wireless charger the same as an embedded wireless charger?

Not necessarily. An under-desk charger can be mounted beneath the tabletop and charge through the surface, while some embedded designs require a recess or cut-out in the furniture.

Does tabletop material affect wireless charging?

It can affect the complete charging configuration. Buyers should test the intended material, construction and thickness rather than relying only on a maximum charging-distance specification.

Will an under-desk charger work with a phone case?

Phone cases can add distance and vary in construction. Representative phones and cases should therefore be included in sample testing.

How do users know where to put the phone?

Because the charger is hidden, furniture designers should consider a charging symbol, surface marker or another positioning method to identify the intended charging area.

Is 20mm charging distance the same as 20mm tabletop thickness?

Not necessarily. Charging distance describes the supported distance in the charging configuration. Actual tabletop thickness is only one part of that distance and should be evaluated together with the complete installation.

What should furniture manufacturers test before production?

They should test the actual or representative tabletop, thickness, material, intended phones and cases, alignment, mounting stability, power configuration, cable routing and complete furniture installation before final approval.

Explore Furniture Wireless Charging Solutions

For B2B buyers evaluating under-tabletop wireless charging for desks, conference tables, hotel furniture and other furniture projects, explore SIYOUNI Furniture Wireless Chargers to review available product configurations and installation requirements.

Need a Long-Distance Under-Desk Charging Solution?

For projects requiring a hidden under-tabletop charging unit, SIYOUNI Model T20 provides Qi wireless charging with up to 10W output, up to 20mm maximum charging distance, and adhesive under-tabletop installation without requiring a charger installation hole through the visible desk surface.