Best Konnwei in 2026

★【SAVES MONEY AND TIME】The KW850 car computer reader is a professional vehicle diagnostic tool for car owners to quickly read and erase DTC (engine fault codes) as well as a battery tester. A look-up library with over 8, 000 built-in generic code definitions allows you to accurately identify the cause of your CHECK ENGINE and perhaps fix it without going to see your dealer. It also assists you in easily passing annual emissions tests and SMOG CHECK.

★【NOT ONLY TURN OFF THE CHECK ENGINE LIGHT 】Unlike other cheap car diagnostic scanners, KW850 OBDII code reader covers full OBDII/ EOBD diagnostic functions for engine system. O2 sensor test, EVAP systems test, and on-board monitoring test give you full control of your vehicle's running status, while a graphical and numeric live data stream display will help you to find out the faulty sensor readings. (Please be noticed: this function is for ENGINE System only).

★【UNIVERSAL COMPATIBILITY AND EASY TO USE 】Works on most 1996 US-based, 2003 EU-Based and Asian (OBDII & CAN) domestic and imported vehicles, including passenger cars, SUVs, light trucks, etc. Supports all OBDII protocols. Simply plug into the OBD II port on your car, turn the ignition on and you are ready to go. No battery or complicated apps install needed.

【Automotive Car Battery Tester】 As one of the most cost-effective products of KONNWEI, it's a perfect Christmas gift. KW208 can test all 12V 100-2000CCA batteries including regular flooded, AGM flat plate, AGM spiral, or gel batteries. Provide overall analysis of batteries’ health and help you know their status in advance before it dies. KW208 battery tester support cranking and charging system test also alternator and starter test.

【Display Overall Batteries Data】KW208 12V Battery Load Tester gives you the basic battery parameters such as voltage, internal resistance, cold cranking amp and AH capacity, battery health and charge status. Additionally, battery cca tester will also show you professional advice whether to replace or charge the battery.

【 >99.5% Accuracy】Thanks to KW208’s powerful and smart chip, it provides more than 99.5% precise testing reports within milliseconds(testing results refer to US Midtronics), greatly improved the testing speed compared to other battery testers.

【6 & 12 Volts Battery Tester】 As the upgraded version of KW600, KW650 can test all 6V and 12V 100-2000CCA batteries including regular flooded, AGM flat plate, AGM spiral, or gel batteries. The perfect automotive battery testers to diagnose the batteries of car, boat, lawn mowers, etc. Perfect for Father's Day Gift.

【One-key Waveform Analysis】The exclusive function on KW650 battery analyzer is the voltage waveform analysis, for the beginners, it helps to track the real-time voltage changing to find the battery issue, for the professional repair store, it’s continuous voltage monitoring results can be uploaded to computer then compare it to achieve the analysis of in-car systems.

【 >99.5% Accuracy】Thanks to KW650’s powerful STM-32 chip, it provides more than 99.5% precise testing reports within milliseconds(testing results refer to US Midtronics), greatly improved the testing speed compared to other battery testers. Besides KW650 is one of the few automotive battery and alternator testers that supports UPDATE function.

❂【FULL OBD2 MODES OBDII Code Reader】KONNWEI KW310 code scanner is a professional check engine light diagnostic scan tool, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O2 test, On-board Monitoring that other obd2 scanners don’t have at this price.

❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car diagnostic scanner with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.

❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this car computer reader, stay at home and get the information you want then fix the car on your own.

❂【FULL OBD2 MODES ENGINE CODE READER】KONNWEI KW310 OBDII code reader is a professional car computer fault code reader, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O 2 test, On-board Monitoring that other obd2 scanners don’t have at this price.

❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car computer reader with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.

❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this automotive code scanner, stay at home and get the information you want then fix the car on your own.

【A Professional Vehicle Doctor for Car Owners, Easy to Use】 -- The obd2 scanner can quickly read and erase DTC (engine fault codes), on-screen DTC definitions and built-in DTC look up library allow you accurately determine causes of the check engine light and turn-off Check Engine Light, Reset Monitors; I/M Readiness Monitoring; Graphical and Numeric Live Data Stream; Automatic VIN acquisition, etc. Perfect for father's day gifts!!!

【Strong Compatibility】--Works on most gasoline vehicles 1996 US-Based, 2001 EU-Based and Asian cars, and newer OBDII/Eobd & CAN domestic or import vehicles. Supports all OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. 8 kinds of language available: English, German, French, Spanish, Italians, Dutch, Russian and Portuguese.

【Exclusive OBDII Diagnostics】-- This automotive scanner with unique one-click I/M readiness status design, which make it easy to use this car scanner right out of the package. Red-Yellow-Green LEDs and build-in speaker indicate emission monitor status allow you easily determine whether your vehicle meets the State Emission Monitor Status and assist you to pass the Smog Check.

【ENHANCED OBD2 SCANNER & BATTERY TESTER】KONNWEI KW681 is the perfect combination of check engine code reader and 6V&12V car battery alternator load tester. Not only can this obd2 scanner read live O2 sensor test data, freeze frame data, on-board monitor test data, turn off check Engine Light (MIL), clear codes and resets monitor, retrieve vehicle information(VIN, CID and CVN). Also it can provide overall analysis of batteries’ health and help you know its status in advance before it dies.

【AUTOMOTIVE CAR BATTERY TESTER】KW681 can test all 6V & 12V 100-2000CCA batteries including regular flooded, AGM flat plate, AGM spiral, or gel batteries. Provide overall analysis of batteries’ health and help you know its status in advance before it dies. KW681 battery tester support cranking and charging system test also alternator and starter test.

【DISPLAY LIVE DATA OR VOLTAGE IN GRAPHING】KW681 obd2 scanner automotive diagnostic tools shows live vehicle sensors data including real-time voltage change in test and graph formats, allows you to focus on any suspicious or symptom-specific data parameters and playback real PID data from the electronic control module. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels, it’s a obd2 car diagnostic scanner for all cars.

➤➤➤➤➤【POWERFUL FEATURES】-The KONNWEI OBD2 automotive code reader is a professional diagnostic scan tool for car owners, which has Almost OBDII/EOBD Diagnostic Functions, including Read & Clear DTCs, Query Freeze Frame Data, Read Dynamic Datastream, Read Vehicle Information, O2 Sensor Test, EVAP Systems Test, On-board Monitor Test, Read Pending Fault Code, Read Permanent DTC, Read Readiness Status, Turn-off Malfunction Indicator Light (MIL), Print Data to PC, Permanent Code Retrieval, and more.

➤➤➤➤➤【POWERFUL COMPATIBILITY】- The KONNWEI obd2 code scanner works on most vehicles sold in the USA from the year of 1996; Supports all OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. Works with English, German, French, Spanish, Italians, Dutch, Russian and Portuguese. It gets the power directly from the OBDII Data Link Connector in your vehicle. Fast scan and erase engine fault codes, let you decide if it's something you can fix or need more advanced help. Save money and time.

➤➤➤➤➤【EXCLUSIVE OBDII DIAGNOSTICS】- This obd ii car scanner automotive scanner with unique one-click I/M readiness status design, which fast to scan vehicle’s engine healthy status. Exclusive O2 Sensor Test, EVAP Test of Fuel Tank System(Mode 8) and Advanced On-board Monitoring(Mode 6) make you full control of vehicle running status. Red-Yellow-Green LED indicators allow you easily determine whether your vehicle meets the State Emission Monitor Status and assist you to pass the Smog Check.

【PROFESSIONAL-GRADE 6V-12V-24V CAR BATTERY TESTER】 KW720 is the top 1 battery tester automotive which can works on all 6V, 12V and 24V batteries(100-2000 CCA), testing result up to 99.99% accuracy, also great alternator and starter tester, the most reliable battery load tester on the market.

【LARGE COLOR SCREEN + ENHANCED CLIPS + THERMAL PRINTER】compared to other similar 12V battery testers, KW720 is the only battery analyzer that adopts a very large color screen and rugged design. It also upgraded the connection cable(8.8ft) and enhanced the clips to reduce the measurement error. Besides you can print the testing data at any time with the built-in thermal printer(paper included).

【ADVANCED VOLTAGE WAVEFORM FUNCTION】KONNWEI is the only auto battery tester manufacturer that can catch the voltage changing and show the waveform into graphing, up to 20 points in one second, helps to track the real-time voltage to find the battery issue. Even can be uploaded to computer compare them to analyze the in-car system.

【All-in-one Battery Charger】KONNWEI KW510 is a professional 3 in 1 battery tester, battery charger, battery maintainer(pulse repair), trickle charger and battery desulfator. The large color LCD display and button-operated features will be more convenient compared to other similar products. Perfect Gift for holidays!

【Accurate Battery Tester】running for years but no idea about battery status? KW510 12v battery tester provides you an overall analysis of battery health by checking its voltage charge, internal resistance then tells you whether the battery needs to be recharged. Also this battery tester runs cranking and charging system test and car alternator tester charging.

【Fully Automatic Battery Charger】charge batteries as low as 2-volt, max output 12-volt 5-amp. KW510 battery charger not only helps you charge the batteries but also adapts the newest pulse repair technology, one-click repair and automatically detects battery sulfation and acid stratification to bring the batteries back to life and restore their performance.

ALL IN ONE OBD2 GAUGES ➤ KW206 Car OBD2 HUD display is the combination of automotive trip computer gauge and diagnostic scan gauge. Not only it can display up to hundreds of real-time engine parameters in its digital 3.5’’ color screen like speedometer, RPM, water coolant temperature, fuel consumption, total mile ... but also can read engine fault codes and turn off the check engine light.

PROFESSIONAL OBD2 SCANNER ➤ the KW206 car hud is newly designed as an enhanced HUD display and car diagnostic scanner, it’s a smart OBD2 gauge for car owners to quickly read and erase DTC (engine fault codes) and check Live Data Stream which can help you to accurately identify the cause of your CHECK ENGINE LIGHT and perhaps fix it without going to see your dealer.

SAFETY DRIVING HUD ➤ the KW206 is an upgraded version of car Head-Up Display with its high updating rate, warning systems and more. Accessing data directly from car computer and display it in a large digital 3.5in color LCD, avoid accident happening when you’re driving with head down. Besides, 4 parameters alarm including RPM, VSS Speed, ECT (Engine Coolant Temp), Voltage can be set to help you reducing over-speed risk and tickets, developing a good driving habit and safety.

❂【UNIVERSAL PROTECTIVE CASE】 Carrying case for all series of KONNWEI products including KW310, KW208, KW850, KW650, KW206, KW681, KW210, KW450, KW510, etc. Also compatible with other diagnostic tools like Foxwell, Ancel and Atuel obd2 scanner and battery testers.

❂【DIMENSIONS】 9" x 5" x 3.7"(L*W*H)

❂【PREMIUM MATERIAL】 Made of heavy-duty, durable and waterproof fabric. Well padded semi-flexible interior provides excellent protection for your tools against scratches, dust, impacts, and accidental dropping.

✅【10 ENHANCED OBD2 FUNCTIONS】Except the basic functions like read and erase codes, VIN information, KW320 also equipped with more advanced OBD2 functions that other similar code readers didn’t have like O2 and EVAP test, these will be very important when needed.

✅【COLOR DISPLAY】2.8 inch large colorful screen allows you easy to read no matter day or night, plug and play no need extra power supply powered by car OBDII port.

✅【WIDE COMPATIBLE】Works on MOST 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 9 languages English, German, French, Spanish, Russian, Polish, Italian and Portuguese.

❂【FULL OBD2 MODES ENGINE CODE READER】KONNWEI KW310 OBDII code reader is a professional car computer fault code reader, except the normal read/erase engine fault codes function, it still supports Live data, Freeze Frame, I/M Readiness, O 2 test, On-board Monitoring that other obd2 scanners don’t have at this price.

❂【WORK ON ALL USA 1996 AND NEWER VEHICLES】Work on most 1996 and newer domestic and import gasoline or diesel vehicles(OBDII & CAN) that are located in USA, including passenger cars, SUVs, light trucks, etc. Simply connect the car computer reader with car’s obd2 port, turn on ignition then it’s ready to analyze check engine light. No battery or apps needed.

❂【DIAGNOSIS CAR ON YOUR OWN】Plug and play with the clear main menu, no extra app needed. Even if you’re not familiar with vehicle repair, you can easily take control of this automotive code scanner, stay at home and get the information you want then fix the car on your own.

All-in-One Scan Tool: Fast read and clear DTCs, turn off MIL(‘Check Engine’ Light). Quick access to I/M readiness. Read/review data stream/freeze frame. Read/record/graph/playback live O2 sensor data. Request on-board monitoring test results. Request EVAP system test results.

Vehicle Coverage: Works for 1996 US-Based, 2001 EU-Based and Asian cars, and newer OBD II/Eobd & CAN domestic or import vehicles.

2.8" TFT LCD Screen: 2.8’’ TFT 320*240 pdi LCD screen, high luminance, better contrast ratio, rich in layers. Best solution for high quality pictures display.

EASY TO USE: Track your battery’s condition with this tester that connects to your vehicle’s ring terminals

PEACE OF MIND: This battery tester monitors battery voltage and displays the voltage on the LCD screen when button is pressed

RED WARNING LIGHT: The monitor’s indicator light will flash red if the battery voltage is lower than 11.6 volts

Expanded Battery Organizer Case – This versatile, portable batteries organizer holds 180 total batteries, including 78 AA, 64 AAA, eight 9-volt, 10 C, 8 D, and 12 flat batteries!

Wall-Mounted or Drawer Use – The smart designed with hinged clear cover can be stored in a kitchen drawer or closet or mounted on a wall in a garage or mud room.

Quick Visual Accessibility – A transparent lid design makes it easier to identify which batteries you have in stock, which you need to replenish, and what’s available.

【TURN OFF CEL】 This AL319 car diagnostic tool supports Reading DTCs, displaying Live Data, Freeze Frame & I/M Readiness etc to figure out the root cause of the Check Engine Light (CEL) and turning it off, to help you detect any potential problems, and to avoid excessive costs for unnecessary repairs.

【EXTENSIVE APPLICATION】 Autel AL319 Compatible with 7 languages (English, French, Spanish, etc.) and various post-1996 OBD II protocol vehicles (Toyota, Nissan, Honda, Ford, etc.), this OBD II scanner provides accurate and fast diagnosis for worldwide car owners.

【FOR END USER & DIYERS】 This error code reader AL319 is “plug and play” and comes with an easy interface. Even if you’re not familiar with vehicle repair, you can quickly take control of this obd2 scanner, and get the information you want.

Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.

Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.

LCD Display - Designed with a clear display LCD screen (128 x 64 pixels) - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.

Expanded Battery Organizer Case – This versatile, portable batteries organizer holds 93 total batteries, including 45 AA, 25 AAA, four 9-volt, eight C, six D, and five flat.

Wall-Mounted or Drawer Use – The smart designed with hinged clear cover can be stored in a kitchen drawer or closet or mounted on a wall in a garage or mud room.

Quick Visual Accessibility – A transparent lid design makes it easier to identify which batteries you have in stock, which you need to replenish, and what’s available.

FULLY AUTOMATIC: The Schumacher SC1280 automatically detects 6V and 12V batteries. When the battery is fully charged, the unit automatically stops charging and shifts to maintain mode.

MICROPROCESSOR CONTROLLED: After gathering information from the connected battery, the microprocessor adjusts voltage and charge, allowing fast charging without negatively impacting battery capacity and longevity.

BOOST BATTERY HEALTH: The unit features multi-stage charging and float-mode monitoring for optimum battery health and extended battery life.

[Pro OBD2 Scanner] - BlueDriver is the easiest way to scan and understand your vehicle like a professional mechanic. Read and clear your car’s trouble codes and check engine light.

[Read & Clear All The Codes] - BlueDriver's enhanced vehicle diagnostics gives you access to information normally available only to mechanics on their OBD2 scan tools. Now you can read and clear ABS, Airbag, SRS, TPMS codes, and many more.

[Get The Right Fix] - Much more than a car code reader, BlueDriver is a diagnostic tool. Get unlimited specific repair reports containing possible causes, reported fixes, and more for virtually every vehicle make and model.

CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.

Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed device with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.

Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.

Expanded Battery Organizer Case – This versatile, portable batteries organizer holds 93 total batteries, including 45 AA, 25 AAA, four 9-volt, eight C, six D, and five flat.

Wall-Mounted or Drawer Use – The smart designed with hinged clear cover can be stored in a kitchen drawer or closet or mounted on a wall in a garage or mud room.

Quick Visual Accessibility – A transparent lid design makes it easier to identify which batteries you have in stock, which you need to replenish, and what’s available.

Compatible with a wide range of third-party apps such as OBD Fusion, Torque and Car Scanner which can turn your iPhone, iPad or Android phone/tablet into a sophisticated car scan tool.

Read diagnostic trouble codes and freeze frame & other diagnostic data, reset check engine light, view real-time sensor readings, create customized dashboard, estimate fuel economy, and do more with a proper App.

Compatible with OBD II / EOBD compliant cars and light trucks (model year 1996 or newer in the US, including pickup trucks, hybrid and many electric vehicles; may require special apps).

🚙【On-Screen DTC Definition, Save Time & Easy To Use】Autel MS309 OBD2 code reader with UPGRADED CHIP to retrive and clear generic(P0, P2, P3 and U0), manufacturer-specific(P1, P3 and U1) and pending codes, and display DTCs(Diagnostic Trouble Codes) meanings under the codes based on the built-in database(more than 3000 codes). Don't need to spend much time to search meanings on the internet. This advanced plug-and-play MS309 scanner saves you time - a must-have obd2 scanner for each car owner.

🚙【Retrieve Freeze Frame Data &Vehicle info】The more specific the information available, the clearer the problem. The OBD2 scanner MS309 can retrieve freeze frame data, including important engine parameters like RPM, fuel pressure, fuel trim, engine coolant temperature, etc. Also it can retrieve Vehicle Information such as VIN number, Calibration ID(s), Calibration Verification Nos. (CVNs), etc, which is useful to check whether the ECU matches when you are buying a used car.

🚙【Read Codes & Clear Codes】Knowing the codes in advance will brace you for the repair cost estimate so that you won't be fooled and get overcharged by the repair shop.This Autel MaxiScan MS309 obd2 scanner scans OBD2-compliant vehicle Diagnostic Trouble Codes (DTCs) in seconds to pinpoint emission-related issues. The little guy can do many basic but necessary works: read/clear codes, view DTC definition, turn off check engine light, check I/M Readiness status, retrieve freeze frame data and vehicle info.

Turn your iPhone, Android device, or Windows PC into a professional-grade diagnostic scan tool

Recommended adapter for FORScan, Torque, BimmerCode, Dashcommand, AlfaOBD, Carista and many more

Enhanced OEM support for Ford, GM, Mazda, Nissan/Infinity, Toyota/Lexus/Scion, Honda, Hyundai, Kia

Battery Tester For All Batteries - Works with AAA AA C D 9V 1.5V batteries and button type.

Easy to use - quickly identify "good" (green),"low" (yellow),"replace/recharge" (red) battery status

No Battery Needed For Operation - Clear to read. Activated by the battery being checked.

【Vehicle CEL Doctor】The NT301 obd2 scanner enables you to read DTCs, access to emissions readiness status, turn off CEL(check engine light) or MIL, reset monitor, read live data and retrieve VIN of your vehicle.

【Accuracy & Streams】Live data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend.

【Worthy to Own】Recommended by Mechanic Scotty Kilmer on Youtube. Codes analysis and Printer compatible. Unique PATENTED design, 2.8" color screen, Free Lifetime Update and 1-year seller assurance with EXCLUSIVE tech and service team.

4 Hole sizes from 6.3Mm(1/4"), 8mm(5/16" ), 9mm(23/64" ), 10mm(25/64" ).

6 different Push pin rivet for many brand vehicles.

Great material - these bumper clips are made of high-quality Black nylon Material, anti-wear and anti-corrosion, would not break or crack easily during use.