Our 12 volt accessories are perfect for use in just about any vehicle or 12V off-grid home. Use one of our socket multipliers to increase the number of accessory outlets in your car, truck or RV. Create a 5v USB power outlet using a 12V to USB adapter. We also carry 12 volt extension cords that handle up to 15amps!
See our tips for using 12 volt accessories safely
Semi-Truck & RV Supply
Categories
- 12 Volt Accessories
- 12 Volt Appliances
- 12 Volt Coffee Mugs
- 12 Volt Cooler Accessories
- 12 Volt Coolers
- 12 Volt Electric Blankets
- 12 Volt Fans
- 12 Volt Heaters
- 12 Volt Refrigerators
- 12 Volt Televisions
- 12 Volt TV Accessories
- 12 Volt Vacuum Cleaners
- Air Accessories & Tire Gauges
- Air Fresheners
- Blankets - Travel Pillows
- Cab Accessories
- CB Radio
- Clipboards
- Clocks - Travel Alarm Clocks
- Decals - Placards
- Gloves
- Ice Scrapers Snow Brushes
- Lights & Lenses
- Log Books & Reports
- Mobile Audio Video Accessories
- Office Products & Stationery
- Padlocks - Truck Locks
- Power Supplies & Inverters
- Safety - Emergency
- Solar
- Truck Refrigerators
- Vehicle Maintenance - Repair
- Weather Radio
12 Volt Accessories
12 Volt "Clip-On" Battery Platinum Series Cigarette Lighter Adapter
Turn any 12 volt battery into a 12 volt accessory power supply. Gator clips and 12v plug receiver allows for easy operation and fool-proof setup. &b...
$9.59
Sale: $8.82
Save: 8% off
Sale: $8.82
Save: 8% off
RoadPro
RPPSAPS
12 Volt 12' Extension Cord with Cigarette Lighter Plug
12volt socket extension cord powers most devices up to 15amp. Great for RV's and Campers! • 12' 18gauge Heavy Duty Wire • Power Cord is...
$21.99
Sale: $18.69
Save: 15% off
Sale: $18.69
Save: 15% off
RoadPro
RP-203EC
12 Volt 2 Outlet Cigarette Lighter Adapter
Expand your number of Lighter Socket Plugs to support your 12 volt accessories! • Power Indicator LED • 15a Built in Fuse
$6.24
Sale: $5.74
Save: 8% off
Sale: $5.74
Save: 8% off
RoadPro
RP-2232
12 Volt 2 Outlet Cigarette Lighter Adapter with Short Cord
Two socket wired plug expander. Turn one plug into two while improving convenience. • Heavy-Duty metal connections
$4.65
Sale: $4.28
Save: 8% off
Sale: $4.28
Save: 8% off
RoadPro
RP-223
12 Volt 2 Outlet Platinum Series Fused Cigarette Lighter Adapter with Short Cord
Two plug 12v axillary socket extension. Perfect for RVers, Truckers, or those who use multiple 12v accessories. • Heavy-Duty metal connections...
$7.90
Sale: $7.27
Save: 8% off
Sale: $7.27
Save: 8% off
RoadPro
RPPS-223
12 Volt 3 Outlet Platinum Series Cigarette Lighter Adapter with Short Cord
Power three 12 volt accessories simultaneously. Heavy duty wire and spring contacts ensure your 12 volt accessories get all the power they require....
$10.99
Sale: $10.11
Save: 8% off
Sale: $10.11
Save: 8% off
RoadPro
RPPSP-211
2 Reviews
12 Volt 6' Extension Power Cord with Cigarette Lighter Socket
Don't have a 12 volt outlet in or on your vehicle? Well that's not a problem with our 12 volt extension outlet. You can add one yourself! •...
$8.99
Sale: $8.27
Save: 8% off
Sale: $8.27
Save: 8% off
TruckSpec
TSPS-16ES
2 Reviews
12 Volt Battery Monitor
Keep an eye on battery voltage. Plugs into the lighter socket in your car, truck or RV. Don't get stuck with a dead battery, know your voltage. &bul...
$19.99
... more info12Volt-Travel
XL-CAR-V
12 Volt Reverse Polarity Replacement Cigarette Lighter Plug
Replaces worn or broken Lighter Socket plugs and easily reverse polarity if needed! • Heavy duty connection springs • Positive and...
$3.99
Sale: $3.67
Save: 8% off
Sale: $3.67
Save: 8% off
RoadPro
RP-222
12 Volt Single Outlet Platinum Series Cigarette Lighter Adapter w/10' Coil Cord
12volt socket extension cord powers most devices up to 10amp. Bungee style cord keeps out of the way and retracts after use for convenience. •...
$7.70
Sale: $7.08
Save: 8% off
Sale: $7.08
Save: 8% off
RoadPro
RPPS-2231
1 Review
12-Foot 12V Extension Cord with USB Port
This 12 volt extension cord allows you to easily extend your existing 12 volt outlet. It includes an optional mounting bracket for permanent...
$22.97
Sale: $19.52
Save: 15% off
Sale: $19.52
Save: 15% off
Wilson Electronics Inc.
305203ECUSB
12-volt 2+2 Cup Holder Power Outlet
Quickly add a 12V accessory outlet plus two 5V USB outlets. Fits in most cup-holders Allows Dual USB charging Provides Two 12V charging outlets Fused...
$12.59
Sale: $11.58
Save: 8% off
Sale: $11.58
Save: 8% off
MobileSpec
MSCUP22USB
12-Volt 2-Outlet Plus USB Splitter
A Great 3-Way adapter from MobileSpec. Quickly turn a single 12V accessory outlet into two, plus an added USB charge port! This splitter powers and...
$13.95
Sale: $12.83
Save: 8% off
Sale: $12.83
Save: 8% off
MobileSpec
MS223USBBL
1 Review
12-Volt Battery Monitor
The 12-Volt Battery Monitor that does it all. With this lighter socket battery monitor you can quickly and easily check the condition of your battery,...
$19.99
... more infoPeak
PKCOAP
12-Volt Battery Saver
The Koolatron Battery Saver detects when your battery drops to 11-Volts and shuts off the current to all accessories plugged into it. The battery...
$27.99
Koolatron
70110
12-Volt Blue Glow 2-Socket Power Adapter
Expand on the number of Aux 12 volt sockets your vehicle has while improving usability with this 8' socket extender/expansion device. • Heavy...
$8.39
Sale: $7.72
Save: 8% off
Sale: $7.72
Save: 8% off
MobileSpec
MS223BL
12-Volt Dual 2.4amp USB Adapter
Now you can add USB power outlets without losing access to your 12-volt power outlet so you can still plug in stuff like phone and gps chargers. This...
$19.68
Wilson Electronics Inc.
3051224USBBL
12-Volt Power Accessory Outlet with Dual USB Ports
Add a 12V accessory outlet with dual USB ports just about anywhere. This power accessory is wired directly into the vehicle's 12 volt system and...
$19.89
Wilson Electronics Inc.
30512V2USB
3' Platinum Series 12-Volt Fused TV Power Cord
This heavy duty coiled 12 volt car power cord is great for powering most AC/DC TV's through the car's cigarette lighter socket. This power cord can...
$9.95
RoadPro
RPPS-254
4-In-1 12-Volt Power Outlet with Three 12-Volt Sockets and 1 USB Port
Axillary 12 volt 3 socket expander. Power up to 3 separate devices that draw less than 10a total. • Fits in most standard cup holders • (3...
$11.61
Sale: $10.68
Save: 8% off
Sale: $10.68
Save: 8% off
RoadPro
RP492
4-Way 12-Volt Adapter
Turns One 12-Volt Socket into a 4-Way Multi-Purpose Adapter Compatible with iPad, iPod, MP3, Cell Phones and More Power and Charge Two 12-Volt...
$13.99
Sale: $12.87
Save: 8% off
Sale: $12.87
Save: 8% off
RoadPro
RP431USB
4-way 12-volt And USB Adapter
Do Not Exceed 10 Amps Maximum Capacity For All Devices three 12-volt Sockets With Caps one 1 AMP USB Port USB Port Glows Blue When In Use includes...
$12.59
Sale: $11.58
Save: 8% off
Sale: $11.58
Save: 8% off
RoadPro
RPPSP211USB
Battery Guard for 12 Volt Products
Use your 12 volt accessories without worry of draining your battery in your Truck, Car, RV or Boat! Automatic power detection senses when levels are...
$19.99
... more infoTracker
111-110
Digital LED Voltage Meter for 2.5 to 30 Volt Systems
Often times it's necessary to keep an eye on the available volts in an RV battery bank which often means using a hand-held meter at the battery...
$18.65
... more info12Volt-Travel
HWDCVMTR
Home DC Power Adapter Portable Device Charger
This little guy is super handy. Small enough to be stored just about anywhere and just what you need to power or charge your portable devices just...
$14.95
... more infoWagan Tech
2025
Platinum Series 12 Volt Fused Replacement Cigarette Lighter Plug with Leads
Replace that broken accessory socket plug with this Heavy Duty replacement! • Heavy duty connection springs • Power leads with plugs &bull...
$4.99
Sale: $4.59
Save: 8% off
Sale: $4.59
Save: 8% off
RoadPro
RPPS-225
**Important** When using socket multipliers to increase the number of 12 volt accessory outlets be careful not to overload. You must make sure that the fuse and wiring used in the vehicle to supply power to the original socket can handle everything you intend to plug in.
For example: The fuse is 10A and the wires leading to the socket are 16 gauge.
You intend to plug in a socket multiplier that offers three sockets and one item into each new socket. Unless all three items total draw is less than 10 amps you will "blow" the fuse.