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Car relay: 10 biggest discounts on AliExpress

We picked 10 car relay from AliExpress with real orders and good reviews. Prices go from $6.71 to $11.40, the average rating is 4.8 stars and the most popular one has 6.9k orders. Every product opens on AliExpress, where you pay with buyer protection.

Updated: 2026-11

1. 1-65%Car Relay Voltage Tester Indicator Light Automotive Electronic Relay Tester Universal 12V$6.71 $19.17★ 4.9 · 1.6k soldView on AliExpress →
2. 2-61%RT01 Car Relay Tester with Battery Clamps, 12V Universal 4/5 Pin Relay Test Tool, Heavy-Du$9.10 $23.19★ 4.9 · 206 soldView on AliExpress →
3. 3-60%Car Relay Tester Voltage Tester Universal 12V 24V LED Indicator Light Automotive Car Batte$8.87 $21.91★ 4.9 · 5.7k soldView on AliExpress →
4. 4-60%OBDResource 12V/24V Car Relay Tester 4Pin 5Pin Relay Detection Diagnostic Tool Professiona$10.54 $26.31★ 4.9 · 312 soldView on AliExpress →
5. 5-57%LED Indicator Light Car Battery Checker Electronic Test Car Relay Tester Diagnostic Tools$8.23 $19.02★ 4.7 · 5.2k soldView on AliExpress →
6. 6-56%ANENG LED Indicator Light Relay Diagnostic Universal Car Relay Tester Voltage Tester RT01$9.70 $22.23★ 4.9 · 6.9k soldView on AliExpress →
7. 7-56%Car Relay Tester Diagnostic Tools 12V-24V Voltage Tester Battery Automotive LED Indicator$10.48 $23.88★ 4.7 · 674 soldView on AliExpress →
8. 8-54%Car Accessories Car Battery Checker Universal 12V LED Indicator Light Car Relay Tester Aut$9.45 $20.53★ 4.9 · 6.5k soldView on AliExpress →
9. 9-54%LED Indicator Light Car Battery Checker Electronic Test Car Relay Tester Diagnostic Tools$11.40 $24.78★ 4.9 · 113 soldView on AliExpress →
10. 10-53%Type C Port Automotive Electronic LED Indicator LED Lighting Car Relay Tester Car Battery$8.97 $19.24★ 4.6 · 499 soldView on AliExpress →

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