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🔋 Power Up Your Confidence: The Smartest Battery Tester for Pros Who Refuse to Be Stranded
The KONNWEI KW208 is a professional-grade 12V car battery tester supporting 100-2000 CCA batteries including flooded, AGM, and gel types. Featuring a cutting-edge AI chip, it delivers ultra-fast, 99.99% accurate diagnostics for battery health, cranking, charging, alternator, and starter systems. Designed for plug-and-play use both in and out of vehicle, it offers multilingual support and robust build quality, making it a trusted choice for automotive pros and enthusiasts aiming to avoid unexpected battery failures.













| ASIN | B08MPXGSGN |
| ASIN | B08MPXGSGN |
| Best Sellers Rank | #27,342 in Automotive ( See Top 100 in Automotive ) #38 in Automotive Battery Testers |
| Brand Name | KONNWEI |
| Bullet Point | 【 >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., 【Display Overall Batteries D… |
| Color | KW208 |
| Customer Reviews | 4.5 4.5 out of 5 stars (7,852) |
| Customer reviews | 4.5 4.5 out of 5 stars (7,852) |
| Date First Available | 14 December 2020 |
| Item Dimensions | 20 x 78 x 127 millimeters |
| Item Package Quantity | 1 |
| Item Weight | 230 Grams |
| Item model number | KW208 |
| Manufacturer | KONNWEI |
| Manufacturer | KONNWEI |
| Measurement Type | Battery Tester |
| Minimum Operating Voltage | 12 Volts |
| Model | KW208 |
| Package Weight | 0.23 Kilograms |
| Part Number | KW208 |
| Power Source | Battery Powered |
| Product Dimensions | 2 x 7.8 x 12.7 cm; 230 g |
| Size | KW208 |
| Specification Met | IEC, EN, DIN |
| Style Name | professional |
| Title | KONNWEI KW208 12V Car Battery r, 100-2000 CCA Load r Automotive Alternator r Digital Auto Battery Analyzer Charging Cranking System r for Car Truck Marine Motorcycle SUV Boat |
| UPC | 657419949637 |
| Upper Temperature Rating | 80 Degrees Celsius |
Y**.
Good tester
The build quality including the cable is robust. Software update and desktop app not working in UAE. But the test speed and accuracy is good
G**A
MUY BUEN PRODUCTO
J**E
no funcionaba, lo tuve que devolver
K**V
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. Update as of December 2025: Still using the same product today. Still works great. As long you plot the data as I mentioned above with x-axis as temperature, y-axis as amps, you'll get the right data. Just a tip: you need to let your battery adjust to ambient temperature. Lead acid battery containers are ABS which is a bit of an insulator. If you turn your car on, boost your battery, or charge your battery, the liquid in the battery will be hotter than ambient thus skewing readings even if you do the corrections as I noted. I see a lot of negative reviews and most seem related to not taking into account as to how much temperature affects battery chemistry. A hypothetical battery fresh off the production line with brand new lead plates charged to 100% will read as 0% health, 0% charge at -55 to -65ish celsius (the freezing point of battery acid). You either wait for ambient to match CCA or CA or you plot some graphs.
D**D
Lo he probado en varias baterías y funciona perfectamente, sencillo de utilizar y muy fiable. Una manera rápida de checkear una batería 12v de manera fiable. Complementario a otro probadores como puede ser el densimetro y comprobador de alta corriente para testesr la descarga.
P**I
L'oggetto funziona bene, in manuale è scarso, ho lasciato la lingua inglese anche se nel menu esiste l'italiano. Ho testato alcune batterie, quelle che sapevo leggermente fiacche sono state testate come da sostituire. Direi che ci siamo. Con un video su Youtube ho trovato come testare le batterie degli ups, opzione che mi servirà molto al lavoro. L'oggetto è di plastica senza gomma di protezione, applicherò della spugna sottile da coibentazione con diadesivo per proteggerlo. Al momento sembra ok. Se il display si accende ma non compare la tensione della batteria significa che il contatto sui morsetti non è buono, dopo aver riposizionato tutto ok. Aggiornamento, eseguito test a 40 batterie nuove AGM pronte da montare su UPS, sono rimasto sbalordito, come da foto, letture perfette ci sono piccole variazioni ma è normale. Lo consiglio alla stragrande!!!
ترست بايلوت
منذ أسبوعين
منذ شهر