KONNWEI KW208 Car Battery Resistance Tester 12V Auto Battery Analyzer for CCA 100-2000 AGM GEL Flooded Batteries with Voltage Internal Resistance Health Charge Cranking Test Black
KONNWEI KW208 Car Battery Resistance Tester for 12V Vehicles with CCA and Internal Resistance Measurement

The KONNWEI KW208 is a professional auto battery analyser designed to give you fast, accurate diagnostics for your 12V car's electrical system. It measures key parameters like voltage, internal resistance, cold cranking amps (CCA), and battery health, helping you decide whether the battery is good, needs recharging, or should be replaced. This tester supports a wide range of battery types including regular flooded, AGM flat plate, AGM spiral, and GEL batteries, making it versatile for many vehicles. With support for major standards such as CCA, DIN, EN, and IEC, it's suitable for both home mechanics and garage professionals.
Key Functions and Testing Capabilities

The KW208 goes beyond simple voltage checks, offering a full suite of diagnostic tests to assess battery condition and charging system performance.
Battery and System Testing
Perform battery tests to measure voltage (12V), internal resistance in milliohms, and battery life as a percentage. The tester also runs cranking and charging system tests, along with voltage waveform analysis, providing a complete picture of your car's electrical health.
Result Interpretation
Results are displayed clearly as Good, Recharge, or Replace, so you know instantly what action to take. The device also records and replays battery data for later review, with a lifetime free update service to keep the software current.
Compatibility and Standards
The KW208 supports a wide range of CCA ratings: 100-2000 for CCA, BCI, CA, MCA, SAE, EN; 100-1400 for DIN, IEC, GB; and JIS 26A17-24SH52. This ensures it works with most 12V car batteries on the market.
Design and Ease of Use

The tester is built for straightforward operation, even for beginners, with no internal batteries required.
Power and Connection
The device powers on automatically when connected to the battery (input voltage range 8V-16V), eliminating the need for internal batteries. Simply hook it up to the terminals and start testing.
Portable and Lightweight
With a gross weight of just 0.24 kg, the KW208 is easy to store in a glovebox or tool kit, making it convenient for roadside checks or workshop use.
Practical Benefits for Vehicle Maintenance

Regular battery testing helps prevent unexpected failures and extends battery life through early detection of issues.
Faster Diagnostics
By providing internal resistance and life percentage, the tester helps identify aging batteries before they fail, saving time and avoiding breakdowns. The cranking and charging tests also pinpoint alternator or starter problems.
Supports Multiple Battery Types
The KW208 works with flooded, AGM, and GEL batteries, so you can use it across different vehicles without needing separate testers. This makes it a practical tool for households with multiple cars or small garages.
