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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.

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.

$69.99

Coupon : Apply 10% coupon

Rating: 5.0 ★ (792 reviews)

Availability: In Stock

Brand: KONNWEI

Category: Automotive Tools & Equipment Diagnostic, Test & Measurement Tools Battery Testers

SKU: 7.68*3.74*2.17 inch

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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.

Product description

From the brand

KONNWEI was born from a passion for automotive innovation and a commitment to making vehicle maintenance smarter and easier.

For every driver who values safety, reliability, and smart vehicle care, KONNWEI was born to make professional auto diagnostics accessible to every household—combining decades of manufacturing heritage, cutting-edge technology, and sincere service to become your go-to brand for OBD2 scanners and car battery testers.

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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.

Product description

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