Dell 78W 12V 4-Port USB-C PD36W QC18W Power Adapter with Voltmeter
A 12V four-port panel delivers 78W total through two USB-C PD36W and two USB-A QC18W ports with a built-in blue voltmeter
- Adapter typeUSB C Charger
- First connectorUSB Type C
- Second connectorUSB Type C
- Cable jacketAluminum
- Connector typeMale
- Units per package1
- Charges four devices simultaneously with 78 W total output
- Two USB-C ports deliver up to 36 W each for fast charging
- Two USB-A ports provide 18 W Quick Charge 3.0 speed
- Built-in blue voltmeter shows real-time 12 V system voltage
- Waterproof cover and aluminum alloy body resist dust, splashes and heat
Four-port 12 V charger for vehicles
This Dell power adapter delivers 78 W total output from a 12 V vehicle system. Two USB-C ports supply up to 36 W each and two USB-A ports supply up to 18 W each, allowing four devices to charge simultaneously. It suits drivers of cars, RVs, boats, golf carts, trucks or motorcycles who need reliable power on the move. Buyers who require a mains-powered desktop charger or a higher-voltage input will not be served by this unit.
Aluminium alloy housing with flush or surface mount
The body is machined from aluminium alloy with a matte black finish for heat dissipation and scratch resistance. A translucent rubber cover seals the ports against dust, splashes and moisture for marine or off-road use. Installation uses the supplied 60 cm 18 AWG red and black wires with pre-fitted terminals and a 10 A fuse on the positive lead; the panel can be screw-mounted or secured with the included 3M adhesive pads.
Voltmeter display and protection features
A built-in blue digital voltmeter shows real-time battery voltage at a glance. An anti-slip ON/OFF switch cuts power without unplugging devices. Internal smart IC circuitry and the replaceable 10 A fuse guard against overvoltage, overheating, overload and short circuits. The package adds two spare fuses, two self-tapping screws, a panel cover and an installation guide.
How it compares
Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.
- Price $18.99
- Cheaper than about 60% of the 3,875 comparable items (median $23.99).
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Specifications
| Product | |
|---|---|
| Brand name | Dell |
| Product type | 9 V |
| Adapter type | USB C Charger |
| Product color | Black |
| Ports & slots | |
| First connector | USB Type C |
| Second connector | USB Type C |
| Connector type | Male |
| Size & build | |
| Cable jacket | Aluminum |
| Product dimensions | 14.33 in W × 12.83 in H × 9.06 in D |
| In the box | |
| Units per package | 1 |
| In the box | 1 |
Questions about this item
What total power and per-port limits does the 78W adapter deliver over its USB-C and USB-A ports?
The unit supplies 78W total, with each USB-C port rated for PD 36W and each USB-A port for QC 3.0 18W, so four devices can charge simultaneously without exceeding the overall budget.
What are the panel dimensions and mounting options for fitting this charger in a vehicle or boat?
The panel measures 3.94 by 3.54 by 1.18 inches and includes self-tapping screws for flush mounting plus 3M adhesive pads for surface mounting on dashboards, RV walls or marine consoles.
How do you wire the adapter and which step do installers most often get wrong?
Connect the red 60 cm 18 AWG wire to the positive terminal and the black wire to the negative terminal, using the pre-installed 10 A fuse on the red lead; the common mistake is reversing the polarity despite the clearly marked + and – terminals.
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