The best cigarette lighter splitters with a pass-through socket

XOKO CC-303 is the simplest model of a cigarette lighter splitter without any frills. However, if you don’t count the golden-white color of the device’s body as such.

The device's connection panel consists of a duplicate car lighter socket and two full-size USB ports. Each of the USB connectors produces a voltage of 5 V and a current of up to 2.1 A. Charging of connected gadgets is carried out at a standard rhythm. The charge does not stand still, which is often the problem with cheap adapters of dubious origin.

To ensure a tight fit into the standard cigarette lighter socket and proper power transmission , the device has spring-loaded contacts. Thanks to its relatively compact size, the adapter does not take up much space. But in terms of color, it does not always match the interior of the car - the golden-white color of the body looks like an acquired taste.

The device allows you to charge two mobile gadgets overnight via USB ports, and the pass-through cigarette lighter socket can be used to connect additional car accessories. The adapter works in on-board networks with a voltage of 12/24 V, which means it will fit both cars, trucks or buses.

From Hoco's range of practical accessories for car owners, an inexpensive adapter for the Z34 Thunder power cigarette lighter socket may be a useful purchase.

The device serves to duplicate the standard cigarette lighter socket and charge mobile gadgets through two built-in USB ports. The through socket of the car cigarette lighter is designed for a connection power of up to 96 W - it will not handle the work of the compressor for inflating the wheels, however, a simple car vacuum cleaner can be plugged into a duplicate outlet without fear.

The USB ports on board the device produce power up to 12 W (each separately), and when they work together, the total power threshold is 15.5 W. “For dessert,” the model has a built-in info display, which alternately displays the voltage in the vehicle’s on-board network, the charging voltage and current.

Hoco Z34 Thunder power was assembled in a case made of fireproof plastic and equipped with a rubber cap that covers the through socket of the cigarette lighter. When not in use, the protective cover helps prevent dust and other contaminants from getting inside. The model also boasts protection against overheating, overvoltage and overcharging, as well as smart control of the supplied power for a specific gadget.

The Y-splitter from BASEUS provides the driver and passengers with one pass-through cigarette lighter socket and two additional USB ports.

The device is tightly inserted into the standard car cigarette lighter socket and securely fixed in it. The device works both in the on-board networks of cars with a supply voltage of 12 V, and in trucks (24 V). The only thing is that it is not recommended to overload it - the through socket of the model’s cigarette lighter can withstand connection power of up to 40 W. If this threshold is exceeded, the nest may fail, which often happens.

The barrel in the BASEUS Y-Type Dual USB + Cigarette Lighter bifurcates into two branches. One is the aforementioned pass-through cigarette lighter socket, the second is a pad with two USB ports. Through them there is a power supply with a voltage of 5 V and a current of up to 3.4 A. For ease of use of USB connectors in the dark, they are softly illuminated.

You can additionally connect separate car chargers to the cigarette lighter of the device, thereby increasing the number of available USB ports. Among other things, the model has overload and short circuit protection systems that help avoid premature failure of the device.

The Ugreen 2xUSB 20W Car Charger cigarette lighter adapter acts as a charger for mobile gadgets and is equipped with a through connector for connecting other car devices.

The model is housed in a durable aluminum case with a matte finish. A bright spot in its design is the orange ring that surrounds the upper segment of the case. The connection ports on board the splitter are represented by a through cigarette lighter socket, one full-size USB and one USB type C(with a symmetrical contact group).

Both USB connectors in the adapter design now support Qualcomm Quick Charge 2.0/3.0 fast charging protocols with a maximum power of up to 18 W. And the USB type C port also works using the Power Delivery protocol, so it can be used for accelerated charging of Apple smartphones or tablets.

Built-in charge controllers select the optimal current values for each of the connected gadgets. The model also features a multi-level electrical protection system: against overheating, overcharging, and short circuits. Finally, it is important to mention the universal compatibility of the adapter - it works in on-board networks with voltages of 12 V and 24 V.

If there are no USB ports in the car, the BASEUS Share Together with Cigarette Port C+U 120W splitter comes to the rescue. It duplicates the standard cigarette lighter socket and is equipped with USB A and USB type C connectors (one copy of each).

The adapter is assembled in an oblong-shaped case made of aluminum and ABS plastic. Under the plug on the top platform of the device there is a pass-through cigarette lighter socket, through which it is possible to connect automotive peripherals with a power of up to 60 W( DVR, GPS navigator, car refrigerator, etc.). The same amount of power comes from two USB ports - each of them separately produces 30 W.

Both USB connectors of the adapter support fast charging using the Qualcomm Quick Charge (up to version 4.0+), Huawei SuperCharge Protocol, Samsung Adaptive Fast Charging and Power Delivery (up to version 3.0) protocols. Compatible mobile phones will charge from the splitter ports at an accelerated rate. Thus, the iPhone 15 replenishes half the energy reserves in its battery cells in just half an hour.

The model impresses with its universal power supply from 12/24 V on-board networks, reliable electrical protection, and tight retention in the cigarette lighter socket on bumpy roads. There is only one flaw in its design, and it is far-fetched - these are the side pins of the USB ports. It is not always convenient to connect charging cables from the side, especially in tight spaces around the cigarette lighter socket.