Reliable Relay Testing
In addition to battery testing, the KW371 also serves as an auto relay tester, providing a one-stop solution for your diagnostic needs.
User-Friendly Design
With its intuitive design, the KW371 is easy to use, ensuring that even non-technical users can effectively test their car’s battery.
Versatile Voltage Range
The KONNWEI KW371 is designed to test a wide range of voltages, including 6V, 12V, and 24V, making it suitable for various automotive needs.
Durable Construction
Built with durability in mind, the KW371 is designed to withstand regular use, ensuring long-lasting performance.
Compact and Portable
Its compact size and lightweight design make the KW371 highly portable, allowing you to perform tests anywhere, anytime.
2026 New KONNWEI KW371 2in1 Car Battery Tester &Relay Tester 4/5 Pin 6V/12V/24V Fault Data Printing Start Test Car Battery Charging Scan Tool
Why choose KONNWEI KW371?
(1)Car Battery Tester & Relay Tester 2 in 1
(2)Universal 4-pins 5-pins
(3)Language Support:Chinese English Japanese Korean German French Russian Spanish Polish Italian Portuguese Dutch Thai Malay Turkish Filipino Vietnamese Indonesian
(4) KONNWEI Official Store After sales:Free return and exchange within 1 year
(5)Two testing modes inside and outside the car
(6)KONNWEI has been specializing in automotive repair tools for 15 years.We have a professional R&D team, a 50,000 ㎡ factory, and over 100 million global users.Highly popular among automotive DIY enthusiasts with a 99.99% positive rating,and our comprehensive after-sales service ensures a
