Automotive Relay Tester | 11-25V Car Battery Check | LED Indicator for Diagnostic
Stock #:CMP-01436
SKU:MAIN-00273
$12.99
Ships to United States · standard est. 10-20 business days
Free standard shipping on orders over $59 (under 2kg). Express available at checkout.
This device tests common 4-pin and 5-pin automotive relays. It checks the relay's function by applying a voltage to the coil and observing the contact action. It works with 11-25V vehicle electrical s...
Select an option
1
$12.99
1
Fast Shipping
Secure Payment
Easy Returns
Good to know
Questions about this product
- Will this tester work on my 24V truck battery and standard 5-pin relays?
- Yes, it'll work on both 12V and 24V systems since it operates between 11V and 25V DC. You can use it to test standard 4-pin and 5-pin relays. Just hook the battery clamps directly to your vehicle's battery for power.
- How does this tool help me diagnose a bad starter or charging relay?
- This tool runs an automatic cycle test by sending voltage to the relay's coil. Visual LED lights show you the exact status of the contacts, including open, closed, or fault states. It's a quick way to pinpoint electrical issues before buying replacement parts.
- Is there any danger of damaging the tester if I hook up the battery clamps backwards?
- You don't have to worry about damaging the unit during setup. It has built-in reverse polarity protection to keep the internal circuitry safe from incorrect connections. The tester simply won't power up until you attach the clamps correctly.
Maintenance & Parts spec sheet (PDF)
Get a one-page sheet with full description, specifications, technical details, FAQs, price & SKU - handy to save, print, or share.
Not sure which one?
Compare maintenance & parts
This product
Automotive Relay Tester | 11-25V Car Battery Check | LED Indicator for Diagnostic
Price$12.99
Rating4.9
Sold5,000+
Stock In stock
You're viewing this
Alternative
Automotive Relay Tester | 11-25V Digital Display | 4/5 Pin Vehicle Battery Diagnostic Tool
Price$19.99
Rating4.7
Sold5,000+
Stock In stock
Alternative
Automotive Relay Tester | 11-25V Car Battery Check | LED Indicator Diagnostic Tool
Price$16.99
Rating4.7
Sold274+
Stock In stock
Alternative
Automotive Relay Tester | 12V Electrical System Checker | Car, Truck, RV Battery Indicator
Price$13.99
Rating4.6
Sold800+
Stock In stock
Alternative
Car Relay Tester | 12V 24V Circuit Diagnostic Tool | LED Indicator Light
Price$25.95
Rating4.9
Sold4,000+
Stock In stock
Alternative
Digital Relay Tester | 11-25V Vehicle Battery Detector | 4/5 Pin Relay Diagnosis
Price$13.99
Rating4.7
Sold1,000+
Stock In stock
Alternative
12V/24V Battery Relay Tester | Automotive Diagnostic Tool | Voltage Meter for Car & Lithium Batteries
Price$19.99
Rating4.8
Sold425+
Stock In stock
Alternative
Automotive Circuit Tester | Short & Open Finder | 6-42V DC Cable Tracer
Price$14.99
Rating4.7
Sold193+
Stock In stock
Alternative
40A Automotive Relay Kit | 12V/24V Waterproof 4-Pin & 5-Pin | Durable Socket with Harness
Price$5.95
Rating4.9
Sold1,000+
Stock In stock
Compare options
More Maintenance & Parts
-57%Brake Caliper Piston Rewind Tool | Disc Brake Pad Replacement Kit | Heavy-Duty Service Cube
5.0
$8.95$20.68
Auto Body Dent Repair Kit | 18-Piece Glue Puller System with T-Handle | DIY Paintless Dent Removal Tool
5.0
$11.99
-5%Spark Plug Extractor Kit | Reverse Flute Tool Set for Broken Plug Removal | Engine Repair
5.0
$7.95$8.41
3-Pin Waterproof Electrical Connector | 1J0973703 Sensor Socket Plug
5.0
$6.95
Thread Repair Kit | 30-Piece M6 Stainless Steel Insert Set | Automotive & Industrial Use
4.9
$19.99
Car Door Air Wedge Pump | Professional Window Entry Tool | Inflatable Shim Kit
4.9
$24.99
Clutch Alignment Tool | Plastic Dismantle & Correction Kit | Car Repair Accessories
4.9
$29.99
LCD Digital Tach Hour Meter | Inductive Display for 2/4 Stroke Engines | Motorcycle, Marine, Car
4.9
$23.95
Multi-Purpose Silicone Grease | Waterproof Lubricant & Sealant for Automotive & Home Maintenance
4.9
$14.99
-35%4-Gang Rocker Switch Panel | 12V/24V Marine & RV Control | LED Illuminated Circuit Breaker
5.0
$12.99$19.90
60cm-300cm Air Diesel Parking Heater Stainless Steel Exhaust Pipe Tube Vent Hose Elbow Connector W /Clamps For Car Truck Va
5.0
$20.95
Automotive Battery Analyzer | Digital Voltage & Load Tester | BT-172 with Alligator Clips
4.9
$18.99
Explore the range
Popular in Automotive & Powersports
Motorcycle Chain Maintenance Kit | Mess-Free Lubricator & Cleaner | 1-3 Set Options
5.0
$4.49
Professional-Grade 3M Double-Sided Mounting Tape | 300cm Heavy-Duty | No-Residue Removal
4.9
$6.95
TB2 PRO Mini Tyre Inflator | 120PSI Cordless Pump | Fast Charge, Screen Display
4.9(3.5K)
$88.99
OBD2 Scanner Diagnostic Tool | Voltage & Battery Test | V500 Code Reader
4.9
$26.95
12V Car Battery Monitor | Wireless Bluetooth Health Tester | Android/iOS App
4.9
$50.99
Car Air Pump for Car | 150PSI Portable Tyre Inflator | Motorcycle & Bicycle
4.9(3.7K)
$46.95
Pads and Rotors Themed Car Vent Clips | Mini Drum Cymbals | Universal
4.9(775)
$16.99
AC Recharge Kit Companion | Wireless Charging Pad | Silicone Non-Slip Mat
4.9(1.4K)
$13.99
Plug Gap Tool | Double Hole Spanner | Engine Repair Socket Wrench
4.9(726)
$42.95
Microfiber Cloths | 40x40cm Thick Car Detailing Towels | Auto Wash Drying
4.9(5.8K)
$11.99
Cables with Air Compressor | 3000A Peak | 150PSI Auto-Shutoff Tire Inflator
4.9(454)
$87.99
Remote Car Starter Alarm | Vibration Sensor | Adjustable Sensitivity
4.9(951)
$23.95
Complete the set
Accessories & add-ons
-24%Marine-Grade Switch Panel | 4/6/8-Gang Digital Display with USB Port | 12V Waterproof for Boats & RVs
5.0
$84.99$112.15
-59%6-Gang Marine-Grade Switch Panel | 12V Waterproof Rocker Switches with Red LED Illumination
5.0
$5.95$14.47
-48%Marine-Grade Rocker Switch Panel | 2-8 Circuit Control | Waterproof Toggle Panel for Boats & RVs
5.0
$41.95$80.35
-54%8-Gang Marine Switch Panel | 12V/24V Power Distribution | USB Charging for RV, Boat & Van
5.0
$8.95$19.57
Tesla Jack Pads | 4-Piece Set for Model 3, Y, S, X | Protective Chassis Lift Adapters
4.9
$29.95
20A Marine-Grade Joystick Switch | 12V Waterproof Panel for Boats, RVs & Trucks
4.9
$7.95
-4%Marine & RV Touch Switch Panel | 12V/24V Relay System | 6-12 Gang Slim Control Box
5.0
$166.99$173.79
Marine-Grade Rocker Switch Panel | 1-4 Gang Toggle | 12V/USB Power | Blue LED Backlit
4.9
$19.99
Tesla Jack Pad Set | 4-Pack Rubber Pucks with Protective Storage Case
4.9
$55.99
Wireless Winch Remote Control Electric Winch Controller with 434MHZ Receiver for Truck ATV Winch Remote Control
5.0
$40.95
-28%Marine-Grade Switch Panel | 12V/24V Touchscreen Control with USB Charger & Voltmeter
5.0
$61.99$86.63
Heavy-Duty Tyre Pressure Gauge | 10-150 PSI | Dual Head Truck Tool
4.9(172)
$21.95