A 12V cigarette lighter socket is a DC power outlet found in cars, trucks, boats, and more. It’s used to run or charge 12V accessories and small electronics.

• Common uses: phone chargers, GPS units, dash cams, tire inflators, and small fans.
• Types on this page: replacement sockets, multi-socket splitters, sockets with USB ports, waterproof options for marine/motorcycle use, and battery clip-to-socket adapters.
• Good to know: some vehicles use 24V; many adapters support both.
• Safety tip: check your device’s wattage and the socket/adapter’s fuse rating to avoid overloading.

You can find a range of 12V socket adapters and accessories here to expand or replace your vehicle’s power outlet setup.

Start with what you want to power and where you’ll use it.

• Power needs: match the adapter’s amp/watt rating to your device. Leave headroom for safety.
• Outputs: pick single, dual, or triple sockets; add USB-A or USB-C ports if you charge phones/tablets. Fast-charge (PD/QC) ports can help compatible devices.
• Vehicle voltage: confirm 12V vs. 24V compatibility for cars, trucks, or boats.
• Build and fit: choose portable plug-in units or hardwired sockets; consider waterproof models for marine or motorcycle use.
• Safety features: look for integrated fuses, individual switches, and clear on/off indicators.
• Home use: for indoor power, consider an AC-to-DC converter with a 12V socket and adequate amperage.

Yes—many people use an AC-to-DC power adapter that provides a 12V socket for indoor use.

1. Choose the right converter: pick an AC-to-DC unit with a 12V socket and a current rating that meets or exceeds your device’s draw.
2. Check input: most support 110–240V AC, which suits standard outlets.
3. Use it carefully: keep the converter ventilated and away from moisture; indoor use is typical unless the unit is rated otherwise.
4. Avoid overloads: high-draw car appliances may exceed a small converter’s limits.

This setup can be helpful for bench testing or powering low- to moderate-power 12V devices at home, but performance can vary by device and adapter.

Wiring can vary by vehicle, so consider consulting your manual or a professional if unsure.

1. Plan the circuit: decide on constant power (battery) or switched power (ignition). A fused connection is recommended.
2. Fuse first: install an inline fuse close to the power source to protect the circuit.
3. Use proper wire: choose an appropriate gauge for your expected current and route wires away from sharp edges and heat.
4. Ground securely: connect the negative lead to a clean metal chassis ground.
5. Mount firmly: use the included bracket/screws; seal any body panels if weather exposure is expected.
6. Test: verify voltage and polarity before plugging in devices.

These steps can help reduce risk and improve reliability, but vehicle-specific requirements may differ.

USB-to-12V adapters step up 5V USB power to 12V, which limits the available current.

• Best for low-power gear: often suitable for small electronics like dash cams or GPS receivers, depending on the adapter’s specs.
• Know the limits: many 12V devices (coolers, pumps, high-power lights) draw more current than a USB source can provide.
• Check ratings: compare your device’s 12V amp/watt needs to the adapter’s output capability.
• Keep cables short: shorter, quality cables can help reduce voltage drop.

If your device requires more power, consider using a vehicle’s 12V socket, a multi-socket adapter, or an AC-to-DC converter with a 12V outlet for home use.