KONNWEI KW880 combines three tools in one: a handheld OBD2/EOBD/CAN fault code reader for engine/emissions diagnostics, a digital battery tester for 6–12V starter batteries (Flooded, AGM flat/spiral, GEL, etc.), and Battery Match Reset (battery registration/reset) for vehicles where the function is supported. You can read and clear DTCs, review freeze frame, I/M Readiness, O2 tests, Mode $06, and display live data in numerical and graphical formats. With the battery tester, you measure SOC, SOH, CCA, internal resistance, and perform cranking and charging tests with waveform display.
The KW880 is an upgraded version of the KW870/KW850 with a 2.8” color screen, clear LED indicators, a built-in speaker, and a One-Click I/M button for quick inspection checks. Data can be stored and printed via PC (Windows XP/7/8/10), and the device includes lifetime free updates. Looking for more handheld scanners or wireless adapters? See handheld code readers and Vgate/vLinker. 🔧
Introduction – What is the KW880?
KW880 is a universal diagnostic and battery tool for 12V OBD2/EOBD-compliant vehicles (passenger cars/light vehicles). It helps you find the cause of an illuminated Check Engine light, verify repairs, prepare for inspections, and ensure the starter battery and charging system are healthy. With Battery Match Reset, you can also reset/register a new battery on cars where required after battery replacement.
Power: Via OBD port (12V) / via battery cables for battery test
Storage: Built-in memory for codes, live data, and freeze frame
Printing: Data printing via PC/USB (Windows XP/7/8/10)
Updates: Internet/PC – lifetime free updates
Device Languages: EN, FR, DE, ES, RU, IT (selection based on firmware)
Housing: Black case with red rubber protection (shockproof)
Certificates: CE, FCC, RoHS
Warranty: 12 months
Features & Applications
DTC & MIL: Reads/clears generic (P0/P2/P3/U0) and manufacturer-specific (P1/P3/U1) codes; turns off Check Engine after repair.
Live Data: RPM, ECT, IAT, MAP/MAF, STFT/LTFT, O2, ignition, throttle, fuel pressure, etc., as numerical values/graphs.
Freeze Frame: Snapshot of sensor data when DTC was set.
I/M Readiness: Overview of emissions monitors – One-Click I/M with LED/buzzer.
O2 Monitor & Mode $06: Display ECU's latest test results and on-board monitoring tests.
Mode $08 (Component Test): Initiate available tests (vehicle-dependent).
VIN/CALID/CVN (Mode $09): Vehicle and calibration information.
Battery Test: SOC/SOH/CCA, internal resistance, cranking test & charging test; voltage waveform.
Battery Match Reset: Clears low voltage history and registers new battery (model-dependent).
Reports: Save, playback, and print logs/reports via PC.
Note: Feature availability always depends on what the vehicle's ECU exposes via OBD2/EOBD and on the model year/market.
Supported OBD Protocols & Vehicles
Protocols: ISO 15765-4 CAN, ISO 9141-2, ISO 14230-4 KWP2000, SAE J1850 VPW, SAE J1850 PWM
Regions (guideline): USA 1996+, EU petrol ≈2001+, EU diesel ≈2004+, Canada ≈1998+, China ≈2011+
Compatibility: OBD2/EOBD-compliant 12V passenger cars/light vehicles with 16-pin DLC
Limitations: Not intended for 24V heavy vehicles/J1939. Access to ABS/SRS/BCM, etc., requires brand/module support, which varies.
Battery Match Reset – When and Why?
Some vehicles store battery age/condition and adapt the charging strategy accordingly. After battery replacement, incorrect data can cause warnings or deactivation of comfort functions (e.g., start/stop, one-touch windows, sunroof, etc.). Battery Match Reset:
When the main battery is replaced: Clear low voltage history and register the new battery.
When the battery sensor (BMS/IBS) is replaced: Re-pair the sensor and control unit for correct SOC calculation.
Symptoms of unperformed registration: Warnings in the instrument cluster, inactive start/stop functions, incorrect charging strategy.
Important: Battery Match Reset is only available on vehicles where this is supported via OBD. Always follow the vehicle's service procedure.
Battery Test – SOC, SOH, CCA, Cranking & Charging
The KW880 uses modern conductance measurement, which allows for quick, safe assessment without heavy discharge. Supported battery types: Flooded, AGM flat, AGM spiral, GEL, and selected other 6–12V starter batteries (100–2000 CCA).
SOC: State of Charge.
SOH: State of Health in %.
CCA: Measured Cold Cranking Amps compared to rated value.
Ri: Internal Resistance – indicator of sulfation/aging.
Cranking Test: Voltage drop & current demand during cranking (log and waveform).
After battery replacement or replacement of BMS/IBS: Turn ignition ON, connect the KW880.
Select Service/Reset → Battery Match (name may vary).
Follow the on-screen instructions. Confirm battery type/capacity if the app asks.
Check that warnings have disappeared and that start/stop/windows, etc., function normally.
D. Report & Print
Go to Review/Playback and select the saved session (diagnosis or battery test).
Connect via USB to a Windows PC. Open the PC tool → export/print.
Troubleshooting & Best Practices
No OBD communication: Check ignition (ON), OBD fuse, battery voltage, and OBD connector.
Monitors not "Ready": After code erasure, a drive cycle according to the manufacturer is required.
O2/Mode $06 missing: Not all cars expose all tests via OBD.
Battery Match missing: The function is not supported on all models/model years.
Battery test deviates: Enter correct battery type/CCA, ensure clean terminals and good contact.
Save before clearing: Document DTC + freeze frame before clearing – it facilitates troubleshooting.
Frequently Asked Questions (FAQ)
1. Does the KW880 read ABS/airbag/BCM?
OBD2/EOBD primarily covers engine & emissions. Other systems may require brand-specific tools or extended software – varies per car.
2. Does the battery tester work on all batteries?
Intended for starter batteries 6/12V (Flooded/AGM/GEL, etc.). Enter the correct battery type and rated CCA.
3. Can I print reports?
Yes. Save data in the device and print via USB to PC (Windows).
4. Are updates free?
Yes, lifetime free updates according to the manufacturer.
5. Support for 24V/trucks?
No. The KW880 is designed for 12V OBD2 and battery testing 6/12V. For 24V/J1939, other equipment is required.
6. Difference from KW870/KW850?
The KW880 is an upgraded version with battery match reset, improved usability, and extended battery functions.
Package Contents
1 × KONNWEI KW880 main unit
1 × 150 cm 16-pin OBD2 cable
1 × Battery test cable (clamps)
1 × 82 cm USB cable
1 × User Manual
Important Notices & Disclaimer
OBD2/EOBD focuses on engine & emissions. Module access varies between brands/model years.
Battery Match Reset: Only where OBD support is available; always follow the manufacturer's service instructions.
Battery Test: Follow safety procedures. Incorrect polarity can damage the vehicle/equipment.
12V vehicles: Not for 24V/J1939. Always check the vehicle's electrical system and battery specifications.
Use is at your own risk. Ensure correct interpretation of data and legal requirements in your region.
Need alternatives or complementary tools? Explore our code readers.
Summary
The KONNWEI KW880 is an all-in-one solution combining powerful OBD2 diagnostics, accurate starter battery testing, and practical battery registration in a robust handheld tool. Perfect for workshops and enthusiasts who want to troubleshoot quickly, document clearly, and avoid unnecessary replacements – from an illuminated MIL to verified battery health. 🔧
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Tack för din feedback! Vi är glada att höra att du upplevde vår produkt som snabb och smidig. Det är precis vad vi strävar efter att erbjuda våra kunder. Tveka inte att kontakta oss om du behöver hjälp med något annat. Tack igen för din recension!
