Price: $35.99 - $29.99
(as of Dec 11, 2024 20:55:16 UTC - Details)

From the brand

About Us

KONNWEI is a young and dynamic brand focused on automotive products including obd2 scanners, battery testers, battery chargers, car HUD displays, etc.

Our products combine high-tech with down-to-earth practicality to fix your car on your own. At KONNWEI we explore, we innovate, and we make it happen.

BATTERY TESTER COLLECTIONS

OBD2 SCANNER COLLECTIONS

5-AMP QUICK BATTERY CHARGER

CAR HUD DISPLAY

STORAGE BOX

【Reliable Automotive Car Battery Tester】 KW208 is the most cost-effective battery tester compared to other brands, it has all the functions you need and the lowest spend that you can afford. 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 supports cranking and charging system tests also alternator and starter test. Perfect Xmas and New Year gifts for men and gifts for women. Conveniently store this battery charger for batteries in your glove box or garage, ready for use whenever needed.
【Display Overall Batteries Data】KW208 12V Battery Load Tester gives you reliable and overall 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 recharge the battery. NEW REPLACEMENT AVAILABLE FOR ANY QUALITY ISSUE.
【 >99.99% High Accuracy】Thanks to KW208’s powerful and smart AI chip, it provides more than 99.99% precise testing reports within milliseconds, greatly improving the testing speed and testing accuracy compared to other battery testers. Besides KW208 is the only battery tester that has over 6000+ rating and is the most reliable and popular car battert tester on Amazon.
【Plug and Play】 KW208 Battery load analyzer allows you to test batteries both in-vehicle and out-of-vehicle, and even test dead batteries. Just connect the tester’s clips with battery then it will turn on and ready to test and analyze battery. It’s that easy!
【Starter& Alternator Tester】KW208 not only a great battery load tester that tests batteries cranking & charging system but also can test alternator's charging and starter's cranking conditions. And it can switch up to 8 languages for different needs.
Reviewer: Eljohn
Rating: 5.0 out of 5 stars
Title: Straightforward, effective, and reasonably priced tool
Review: Positives:-Works as intended, providing accurate battery readings.-Easy-to-navigate menu for hassle-free operation.-Compact design allows for easy storage in the car's compartment.-Essential for regular battery checks, especially for those experiencing battery issues.Negatives:-Virtually no drawbacks; it effectively delivers on its promises.The KONNWEI KW208 12V Car Battery Tester has proven to be an indispensable tool in my car maintenance routine. As someone currently facing battery problems, I rely on this device to regularly check my battery's status, and it has been a lifesaver.The tester works exactly as intended, offering clear and accurate readings that help me determine when I need to charge my battery. The menu is straightforward, making navigation quick and simple, even for those who may not be tech-savvy.Its compact size is another standout feature; it fits snugly in my car's storage compartment, ensuring that it's always on hand when I need it. While there are no notable negatives to mention, it’s worth emphasizing that it fulfills its purpose effectively. Overall, the KONNWEI KW208 is a reliable and practical investment for anyone looking to keep their car battery in check.

Reviewer: Murphy
Rating: 5.0 out of 5 stars
Title: Must-Have Car Battery Tester – Easy to Use, instructions provided in review
Review: Amazing for the price. You won’t be disappointed! Works straight out of the box, with no batteries or charging needed since it’s powered directly from the car.The instructions aren’t the best, so for those who might not know: connect it to the car by attaching the Positive (red) clamp to the positive terminal of the car battery first, then connect the Negative (black) clamp to the negative terminal on the battery. It can test batteries both in and out of the car.The device will power on once connected, and you get three options for testing the battery with step-by-step instructions.The three options are Battery Test, Cranking Test, and Charging Test. The Battery Test will determine the health of a battery, the Cranking Test will measure the battery's ability to start the engine, and the Charging Test will measure the voltage of the battery while the vehicle is running to determine if the battery and alternator are working.If you think you have a bad alternator, use this device first and run through the tests. It provides straightforward results (as shown in the photo) that tell you if the battery is good, needs to be replaced, or if the alternator has no output.Couldn’t recommend this device enough

Reviewer: James Taylor
Rating: 4.0 out of 5 stars
Title: Works very well.
Review: On time, good quality and best price. Documentation is a bit sketchy ... one of the tests is for multiple different amperages ... all abbreviated but with no Rosetta Stone!

Reviewer: Sippo
Rating: 5.0 out of 5 stars
Title: Worked great to ID a bad battery
Review: Although 12V the battery was showing it was fully charged, I couldn't get my mower to start. Little did I know that the battery could read a full charge but be bad on the inside!This device revealed the battery as bad. I purchased a new one and the Konnwei correctly displayed that it was fine...and the mower started right up. Accurate, useful, compact, and convenient.

Reviewer: Burgtekie
Rating: 5.0 out of 5 stars
Title: Easy to use
Review: Nothing to dislike about this tester the price is right, does what it is supposed to do. If your battery is going bad this tester will let you know. Also checks charging voltage and cold cranking amps.

Reviewer: JML
Rating: 5.0 out of 5 stars
Title: Great little device
Review: What a great battery tester. It's operation is completely intuitive; I didn't have to look at the instructions. Hook it up to your battery and the device walks you through the necessary steps. Very, very pleased with this purchase. No more going to the auto parts store to request a battery test.

Reviewer: Kindle Customer
Rating: 5.0 out of 5 stars
Title: Great product
Review: Easy to use. I have identified batteries i thought were good due to volts but found low cranking amps.

Reviewer: Joe D'Souza
Rating: 3.0 out of 5 stars
Title: Easy to use...
Review: On an extremely weak battery, the results I think are deceptive. It did not work accurately on my weaker battery.. Gave me a deceptive result it took me awhile to figure that I actually need to replace my battery.

Reviewer: Kindle Customer
Rating: 5.0 out of 5 stars
Title:
Review: Easy to use and seems to work well. I used it on snowmobile and automotive batteries and it seems accurate.

Reviewer: Yankee_s4
Rating: 5.0 out of 5 stars
Title:
Review: Provato su più batterie e alternatore funziona correttamente. Consente di testare gran parte dei formati previsti dalla normativa. Certo non è un prodotto per professionisti, ma sicuramente i tasti e i cavi appaiono abbastanza robusti. Le pinze non sono molto grandi quindi suggerisco di fare attenzione quando si agganciano ai morsetti.

Reviewer: Kyle V
Rating: 5.0 out of 5 stars
Title:
Review: As user Chafik said this doesn't give the correct SOH or SOC because it isn't taking into account the temperature.For example: I used this at +5 deg C today and it was reading 12.49V. But when I ran the tester it was saying my SOC was something like 68%. Why? That isn't remotely correct. A battery at +5C has a max charge of 12.501V meaning my SOC was closer to 99.9%.It was reading my CA as 760A and my CCA as 560. Bear in mind neither of those numbers are the true CA or CCA since this device doesn’t correct for temperature. You can estimate your CA and CCA using what this device gives though. It’s fairly easy using excel. CA is determined at 0 deg C and CCA determined at -18 deg C. CCA = CA/1.25 (which is all this device is doing when you switch between CA and CCA modes). Ignore the SOC and SOH %’s this device gives they are irrelevant and incorrect.So go in excel and plot your x-axis as temperature. Test your battery in CA-mode for your first data point. So for me I put +5C as 760A. and “CCA” is 18C lower than CA so I put -13C as 560A which I got by testing my battery in CCA-mode. Plot a trendline and you can calculate your true CCA and CA. My true CCA is then 504A and my CA is 704A. The device was telling me my SOH was 100% but in reality it’s closer to 97% since my battery is rated as 520A CCA. Taking more readings would make it more accurate of course.

Reviewer: Der Seefahrer
Rating: 5.0 out of 5 stars
Title:
Review: Ideal, um zwischendurch die Autobatterie zu checken.

Reviewer: Laurent
Rating: 5.0 out of 5 stars
Title:
Review: Exactamente lo que necesito para controlar las baterías de mi barco (11). Entrega muy rápido