Description
Quickly diagnose electrical issues with this Universal 12V Car Battery Checker & Relay Tester, designed to test both battery voltage status and automotive electronic relays with ease. Featuring a clear LED indicator system, this compact diagnostic tool provides instant feedback on battery condition, relay operation, circuit continuity, and overall electrical performance.
Perfect for troubleshooting starting issues, checking faulty relays, or verifying battery output, this tester is an essential tool for both DIY users and professional mechanics. Compatible with most 12V automotive systems, it’s ideal for cars, SUVs, trucks, vans, motorcycles, and small equipment.
Compact, durable, and simple to use, this relay tester ensures fast and accurate diagnostics—helping you identify electrical problems before they lead to costly repairs or breakdowns.









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