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|Features/Details/Specifications| KONNWEI KW371 Battery Tester & Relay Tester 2 in 1 | 6V/12V/24V battery system tester with cranking & charging analysis. 4/5-pin relay tester. CCA 10-2000. No batteries required
|Features/Details/Specifications| KONNWEI KW371 Battery Tester & Relay Tester 2 in 1 | 6V/12V/24V battery system tester with cranking & charging analysis. 4/5-pin relay tester. CCA 10-2000. No batteries required
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【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.
【Cranking & Charging System Analyzer】Know Your Vehicle‘s Full Health - Perform 3 in-depth tests: Battery Health (SOH, SOC, Internal Resistance, Voltage), Cranking Test (Min/Max starting voltage & milliseconds), and Charging Test (Loaded/Unloaded ripple detection). Instantly determines if the issue is a dead battery, faulty alternator, or failing starter.
【User-Friendly with Clear Visual Alerts】 - Features a graphical waveform display for real-time voltage monitoring. Delivers straightforward results: Good Battery, Replace, Bad Cell, or Charge Retest. Polarity reverse protection ensures safety for beginners. Includes 18 language options (English, Spanish, French, etc.) for global usability.
【Rugged & Ready for the Field】No Batteries Needed - Powered directly by the vehicle‘s battery via durable alligator clips. Supports USB connection to PC for software updates and report printing (Windows supported). Designed for mechanics, fleet managers, and RV/boat owners who demand reliable diagnostics on the go.
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KONNWEI KW371 2-in-1 Battery & Relay Tester – Professional 6V/12V/24V Automotive Diagnostic Tool
KONNWEI KW371 2-in-1 Battery & Relay Tester – Professional 6V/12V/24V Automotive Diagnostic Tool
The KONNWEI KW371 is a professional 2-in-1 automotive diagnostic tool designed to provide accurate battery analysis and relay testing for a wide range of vehicles. Unlike conventional battery testers, the KW371 integrates both battery diagnostics and a dedicated relay tester, allowing users to quickly evaluate 4-pin and 5-pin automotive relays without removing the entire fuse box. This makes troubleshooting faster and more efficient for mechanics and DIY enthusiasts alike.
Supporting 6V, 12V, and 24V electrical systems, the KW371 is compatible with motorcycles, passenger cars, SUVs, trucks, boats, and RVs. It accurately tests Lead-Acid, AGM, Gel, EFB, and Lithium batteries within a 10–2000 CCA and 5–220Ah capacity range while supporting major international battery standards, including CCA, SAE, EN, DIN, IEC, JIS, and GB.
Beyond basic battery testing, the device performs comprehensive battery health, cranking, and charging system analysis. It measures State of Health (SOH), State of Charge (SOC), internal resistance, voltage, alternator performance, starter operation, and charging ripple, helping identify whether problems originate from the battery, starter motor, or alternator.
A graphical waveform display, easy-to-read diagnostic results, reverse polarity protection, and support for 18 languages make operation simple for users of all experience levels. Powered directly by the vehicle's battery and supporting USB software updates and report printing, the KONNWEI KW371 is a dependable diagnostic solution for workshops, fleet maintenance, and personal vehicle care.
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