TIANWIDJEW 12V USB-C Car Charger Outlet 2-Pack — Dual QC3.0 + PD3.0, Voltmeter & Switch

TIANWIDJEW 2-pack 12V USB-C outlet is a compact replacement cigarette-lighter kit that delivers three simultaneous fast-charge ports (dual QC 3.0 + PD 3.0), a built-in voltmeter and an on/off switch for 12V/24V vehicles.

This pair of marine-grade USB charging sockets converts a standard 12V accessory opening into a tidy tri-port power hub for cars, trucks, boats, RVs and ATVs. Each unit combines two Quick Charge 3.0 Type-A ports and one USB-C PD port that together provide up to 66W of combined fast charging capacity (18W + 18W + 30W). The updated design adds a visible voltmeter and a physical switch to monitor battery voltage and cut power when the ports are not in use, while a removable waterproof cap protects the faceplate in wet or dusty conditions.

How quickly will my devices charge with this dual QC3.0 + PD3.0 setup?

Each port uses independent fast-charging circuitry so compatible devices can negotiate optimal power at the same time. Typical outcomes depend on device support: PD devices prioritize the USB-C port, while Quick Charge-capable phones draw rapid amps from the Type-A ports. The combined maximum output is 66W across the three ports.

• USB-C PD port: up to 30W for laptops, tablets, and PD phones.
• Each QC 3.0 Type-A port: up to 18W for smartphones and accessories.
• All three ports can deliver fast charge simultaneously without shared throttling.

What installation steps are required for a neat, hidden mount?

Installation is straightforward for DIYers with basic tools: remove the old cigarette-lighter insert or drill a clean round hole (~3 cm / 1.18 in), insert the socket, secure it with the mounting ring, and wire the red and black leads to the positive and negative terminals. Markings on the product make polarity clear; once hidden under the dash the result looks factory-installed.

• Drill or use existing 12V socket hole ~3 cm diameter.
• Insert unit, tighten the locking ring for a flush finish.
• Connect red to + and black to − on a 12V/24V supply, test before finalizing.

Will this unit stand up to boating, off-road or motorcycle use?

The face includes a removable waterproof cover to keep water and dust out when the socket isn’t in use, making it suitable for wet or dusty conditions. The compact, recessed design and durable housing reduce the chance of accidental damage on bumpy roads or in marine environments.

• Removable waterproof cap keeps ports protected when idle.
• Suits 12V and 24V systems found in boats, RVs, ATVs and trucks.
• Low-profile mounting hides wiring and resists snagging or impact.

How does the voltmeter and on/off switch help conserve battery?

The integrated voltmeter displays system voltage so you can check battery health at a glance without additional tools. The inline power switch lets you cut output when the ports are not needed, preventing idle draw and avoiding accidental drains during long stops or storage.

• Voltmeter shows real-time vehicle battery voltage on demand.
• Power switch disconnects ports to stop parasitic current draw.
• Simple visual and physical controls—no extra modules required.

Who is this for? Drivers, boaters and DIYers who want a tidy, high-output charging solution that replaces a standard cigarette-lighter opening will value this TIANWIDJEW 2-pack. It’s ideal for families, rideshare drivers, DIY vehicle upfits and owners of 12V/24V recreational vehicles who need simultaneous fast charging for phones, tablets, power banks and USB accessories while keeping wiring concealed and protected.