KONNWEI KW371 6V/12V/24V Battery Tester & 4/5Pin Relay Tester 2 IN 1 | battery tester automotive with cranking & charging load test, 4/5-pin relay tester, CCA 10-2000, No batteries required.

【2-in-1 Professional Diagnostic Tool】Battery & Relay Testing – Not just a battery tester. The KONNWEI KW371 integrates an advanced 12V/24V relay tester capable of diagnosing 4-pin and 5-pin automotive relays. Quickly identifies coil failures and contact wear without disassembling the entire fuse box—a must-have for mechanics and advanced DIYers. 【Wide Compatibility for 6V/12V/24V Batteries】 – Unlike testers limited to 12V, the KW371 covers 6V (Motorcycle), 12V (Car/SUV), and 24V (Truck/Boat) systems. It accurately analyzes Lead-Acid, AGM Flat/Spiral, Gel, EFB, and Lithium batteries with a 10-2000 CCA and 5-220 Ah range. Supports multiple global standards including CCA, JIS, EN, DIN, SAE, IEC, and GB.