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Item #:
230119919
KONNWEI KW371 Battery Tester & Relay Tester | Tests 6V/12V/24V car batteries (AGM/GEL/EFB/Lithium) & 4/5-pin automotive relays. Checks CCA, charging
Item #:
230119919
€ 88
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Monday, August 24
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The KONNWEI KW371 integrates an advanced 12V/24V relay tester capable of diagnosing automotive relays swiftly, making it a must-have for mechanics and advanced DIYers.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Versatile Testing
This 2-in-1 device tests various battery systems (6V/12V/24V) and analyzes cranking and charging, effectively serving both amateur and professional users.
Relay Testing Capability
Equipped to test 4/5-pin relays, this tool simplifies electrical diagnostics, ensuring users can troubleshoot vehicle issues efficiently without extra equipment.
CCA Range
With a wide CCA range of 10-2000, users can accurately assess battery health and performance, providing confidence in replacement decisions and maintenance.
Product Details
| Power Source | Battery Powered |
| Style Name | Fashion |
| Color | Red |
| Item Weight | 9.52 Ounces (269.89 grams) |
| Item Dimensions | 6.3 x 3.5 x 0.91 inches (16 x 8.9 x 2.3 cm) |
| Specification Met | CE |
| Brand Name | KONNWEI |
| Model | KW371 |
| Manufacturer | KONNWEI |
| Part Number | KW371 |
| Included Components | Car Battery Tester |
| Brand | KONNWEI |
| Style | Fashion |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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DIY Mechanics
Ideal for hobbyist mechanics testing car batteries and relays at home for reliable vehicle performance.
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Auto Repair Shops
Great for professional mechanics needing an efficient tool to diagnose battery and relay issues quickly.
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Car Enthusiasts
Perfect for car enthusiasts wanting to monitor battery health and ensure all vehicle electrical systems function well.
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Casual Drivers
Not suitable for casual drivers who lack experience in diagnosing battery or relay issues themselves.
Product Description
KONNWEI KW371 Battery Tester & Relay Tester | Tests 6V/12V/24V car batteries (AGM/GEL/EFB/Lithium) & 4/5-pin automotive relays. Checks CCA, charging & starting system.
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
Can the KW371 test 6V batteries?
Answer: Yes, it supports 6V systems including motorcycles. -
Question:
Is it easy to use for beginners?
Answer: Absolutely! It features polarity reverse protection and clear visual alerts. -
Question:
Does it require batteries to operate?
Answer: No, it is powered directly from the vehicle's battery.
KONNWEI Circuit Testers Editorial Review
The KONNWEI KW371 Battery Tester and Relay Tester has garnered positive feedback from customers, highlighting its versatility and comprehensive testing capabilities. Users appreciate its ability to test various battery types, including traditional lead-acid, flat plate AGM, and lithium batteries, making it suitable for a wide range of vehicles from cars to boats. One of the most praised features is its relay testing functionality, which allows users to easily troubleshoot electrical issues without the time-Consuming trial and error of replacing individual relays. The straightforward interface, complete with graphical displays and easy-to-understand results, has made it accessible even for those who are not professional technicians. Reviewers Consistently mention the efficiency and convenience of having a multi-functional tool that combines battery diagnostics and relay testing in one compact device. Furthermore, the build quality has been noted as robust, with particularly strong battery clamps and wires, instilling confidence in its durability. The display is also appreciated for its readability, though it may reflect in bright outdoor conditions. While most users find the tool effective, there are varying opinions on the accuracy of readings when compared to older models, indicating that some discrepancies may arise due to different calculation methods. Despite these concerns, many users believe the tester represents good value for money and is an essential addition to any DIY mechanic's toolkit. Overall, the KONNWEI KW371 offers a well-rounded package for those looking to perform thorough diagnostics on both batteries and relays, making it a favored choice among automotive enthusiasts. **
Customer Reviews & Ratings
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Pros
- Tests a wide variety of battery types (including newer technologies like EFB and lithium).
- Integrated relay testing functionality simplifies troubleshooting.
- Clear display with easy-to-understand results.
- Robust build quality with durable cables and clamps.
- Efficient operation, drawing power directly from the battery being tested.
- Good value for money, covering multiple functionalities in one device.
Cons
- Some inConsistency in accuracy compared to other battery testers.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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€ 88
Order now and get it around Monday, August 24
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Fastest cross-border delivery
Features & Benefits
- 2-in-1 tool for battery and relay testing.
- Wide compatibility with 6V, 12V, and 24V systems.
- In-depth testing for battery health, cranking, and charging systems.
- User-friendly with a graphical display and real-time monitoring.
- No batteries needed; powered directly via vehicle’s battery.
- Ideal for mechanics, fleet managers, and advanced DIYers.
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