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Compact black handheld relay tester with battery clamps and test button

Sound Troubleshooting 12V Automotive Relay Tester & Battery Alternator Test Kit

SKU CH-M78Q-TT2Q0

Tests 4- and 5-pin relays plus checks battery charge and alternator output with included clamps

  • Featuresfalse
  • Weight0.399 kilograms
  • Tests 4 and 5 pin relays to quickly identify faults
  • Checks battery charge and alternator output via direct clamp connection
  • Lightweight at .399 kg for portable garage or roadside use
  • Simple push-button operation with clear indicator lights
  • USA patented design built for durable long-term service

12V Relay & Battery Alternator Tester

This kit tests four and five pin relays plus battery and alternator health in one compact unit. It is aimed at DIY owners and professional technicians who need to verify relay operation and charging system output without guesswork. The patented design targets automotive electrical fault finding in garages, workshops or roadside kits. Lightweight at .399 kilograms, it fits easily in a tool bag.

12V System Interface Limits

The tester only works on 12 volt vehicle electrical systems and cannot diagnose higher voltage architectures. It checks relay switching and basic charging voltage but does not measure cranking current, parasitic draw or detailed alternator ripple. Relay testing is limited to standard four and five pin configurations so non-standard pinouts will not be evaluated.

Simple Push Button Installation

Clamp the heavy duty leads to the battery terminals, insert the relay into the matching socket and press the test button for an immediate light indication. No external power source or software setup is required. Mistakes usually happen when the clamps contact the wrong polarity or when a corroded relay socket prevents a clean connection.

Highlights

  • Tests 4 and 5 pin relays to quickly identify faults
  • Checks battery charge and alternator output via direct clamp connection
  • Lightweight at .399 kg for portable garage or roadside use
  • Simple push-button operation with clear indicator lights
  • USA patented design built for durable long-term service

Specifications

BrandSound Troubleshooting
Featuresfalse
Weight0.399 kilograms

Questions about this item

Should I choose the 4-pin or 5-pin relay test mode for my vehicle?

The tester handles both 4-pin and 5-pin relays in one unit, so you do not need to choose a separate version; simply plug the relay in and press TEST.

What does the 12 V rating mean when I connect the kit to my car?

It means the tool is designed for standard 12 V vehicle electrical systems, letting you check battery charge state and alternator output directly on the car.

How do the battery clamps connect to the vehicle for testing?

Heavy-duty clamps attach directly to the battery terminals, giving a secure connection for both battery health and alternator output checks.

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