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.

【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 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.

❂【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.

【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.

【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.

➤➤➤➤➤【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.

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.

✅【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.

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.

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.

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.

Power Probe III and accessories

4mm leads and connectors

Continuity tester

[ Read and Clear Codes ] : LAUNCH Creader 3001 obd2 scanner read and clear fault codes for engine system. In addition, Creader 3001 built in fault codes definition lookup library. LAUNCH Creader 3001 obd2 scanner works on most 1996 and newer US-based vehicles that are OBDII compliant (OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN). "PLUG AND PLAY" scan tool, equipped with a 2. 5 feet long cable and made of a very thick flexible insulator, very easy to use for beginners.

[ I/M Readiness Status Test] : You can use this obd2 scanner to check the status of emission-related monitors misfire system and fuel system, make sure the monitor was set before taking it to smog, help you pass the Smog Check easily, save your money for paying fine tickets.

[ Check Engine Light and Identify VIN information] : Turns off the MIL , if you finished repairing the faulty components, then clear the fault codes and turn on the vehicle ignition, it is surprise that you will find the check engine light is off. And more, LAUNCH Creader 3001 obd2 scanner can read the car's information such as VIN number.

MULTI PURPOSE USE- can be used to test different type of household batteries like AA, AAA, C, D, 1.5V,9V and 1.5V button type

REQUIRE NO BATTERY- activated by the battery being checked, no battery needed for operation

SIMPLE BUT EFFECTIVE- compact size and lightweight, portable effective battery tester, a must buy for anyone who uses regular or rechargeable batteries on a regular basis

EASY TO USE - Calibrated scale to quickly identify "good" (green), "low" (yellow), and "replace/recharge" (red) battery status.

PACKAGE CONTENT - 2 Pack battery tester, Opp bag. Weight light and easy to carry.

MULTI PURPOSE USE - Can be used to test different type of household batteries like AA, AAA, C, D, 1.5V,9V and 1.5V button type.

WIDE APPLICATIONS - The AstroAI M4K0R Multimeter accurately measures AC/DC voltage to 600V, Current to 10A, Resistance to 40MΩ. You can use it for continuity test, diode test, battery test and live wire test. Includes 1.5V, 9V and 12V battery test modes to easily test a wide variety of batteries. Multimeter light turns red for low voltage and green for enough voltage.

NON-CONTACT - Fully safe non-contact voltage testing with sound and light alarms. You can detects AC voltage without the use of test leads. Uses NCV function：When the Meter senses a strong AC signal, the red indicator light will turn on and the buzzer will emit a quick beep.

THOUGHTFUL DESIGN - Support Data Hold, Max, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.

[UNIQUE DESIGN- ANTI-LOST NEEDLE GUARD PROTECTION]: Adopt the integrated structure design of the probe protection cover, needle guard function is added to ensure that there will be no stab wounds and the guard will not be lost. Convenient to carry and take it wherever you go.

[LED INDICATION, BIDIRECTIONAL VOLTAGE TESTING]: This upgrade circuit test light is a bidirectional voltage tester. You can attach the alligator clamp either to negative or positive ground, there is also a light emitting diode on the circuit board for polarity indication, red light indicates positive polarity and green light indicates negative polarity.

[WIDER VOLTAGE RANGE] Compared with the auto electrical tester on the market, the maximum voltage measured is only 48V, but the maximum voltage that our technology can measure is upgraded to 60V. AWBLIN circuit test is ideal for checking various vehicles electrical circuits, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, also for testing other 3-60V DC wirings and circuits.

Victron Energy BMV-700H Battery Monitor (Grey) is a high precision battery monitor for systems with a high battery voltage, ranging from 60 - 385 VDC

Victron Energy BMV-700H features a relay that can be programmed to control other devices (such as a battery protect or generator)

Connectivity - use a VE.Direct Bluetooth Smart dongle (sold separate) to monitor on smartphones and tablets. Or, connect to a Victron Energy GX device via VE.Direct cable (sold separate) and monitor anywhere in the world with VRM

Victron Energy BMV-702 Battery Monitor (Black) is a high precision battery monitor for systems with battery voltage ranging from 6.5 - 95 VDC

Victron Energy BMV-702 features an additional input which can be programmed to measure battery temperature (temperature sensor sold separately) midpoint voltage, or voltage of a second battery, plus a relay that can be programmed to control other devices (such as a battery protect or generator)

Connectivity - use a VE.Direct Bluetooth Smart dongle (sold separate) to monitor on smartphones and tablets. Or, connect to a Victron Energy GX device via VE.Direct cable (sold separate) and monitor anywhere in the world with VRM

The Perfect Fit for your Diagnostic Tool - Protect your diagnostic tool with the CASEMATIX Travel Case compatible with BlueDriver Bluetooth Professional OBDII Scan Tool. Includes CASE ONLY.

Hard Shell EVA Protection - This case features impact-resistant EVA materials that will protect your tool from drops, dings, scrapes and scratches. This travel case is also compatible with LSB2 Pro OBDII Scan Tool.

Compact Design for Travel and Storage - This compact OBD2 scanner design travel case measures only 3.5" x 3.5" x 1.5" and can conveniently be stored in a pocket, center console, glove compartment or elsewhere!

Lipo Battery Checker Cell Number: NiCd / NiMH (4 - 7 Cells), Lithium Type (2 - 7 Cells)

Useful Lipo Battery Tester:High quality, safe and durable. Lightweight and compact with excellent performance.RC Battery Checker makes battery voltage more balanced.

Lipo Battery Tester:Voltage Checker Use for LiPo LiFe Li-ion NiMH Nicd battery Applies to check the batteries, simple and convenient to read your cell voltage.

[Wide Application], professional automotive circuit tester/circuit test light with 6-24V DC voltage testing range, ideal for checking various vehicles electrical circuits, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, also for testing other 6-24v DC wirings and circuits.

[Quality LED Bulb], high visibility and strictly tested long service life LED test light bulb to indicate circuits’ signal, the brightness of the light will be different with the different measured voltages. Also including 1 PCS REPLACEMENT LED BULB to make it serve you faithfully for years.

[Bidirectional Current Voltage Testing], you can attach the alligator clamp either to negative or positive ground, while use the probe to touch the other side.

12 Volt battery and system testing

40-1200 CCA testing capacity

7-15V operating range

[Special Design] Flat ribbon OBD2 extension cable with different colors of Male to Female designs. It is very novel and special, and it is more convenient to use.

[Extension] Protect the OBD II connectors of your car and device, and make the car's OBD connector easy to access by using. 20 cm long extension cable will not occupy the place, and can achieve the effect of extension.

[Flexible and Durable] The flat ribbon extension cable is made of high-quality material and craftsmanship, which is built to last and can be bent at will.