KONNWEI KW208 12V Car Battery Tester, Battery Load Tester Automotive 12V Alternator Starter Tester Digital Auto Battery Analyzer Charging Cranking System Tester for Car Truck Marine Motorcycle Boat

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

I bought this to check the batteries in my cars and it works great. No more going to the auto stores to have the battery, alternator and charging system checked. This tester does it all and very easy to operate. The price is great as well. I'm very satisfied.

great price point and it works great.

I bought this primarily because I had been dropping off some used motor oil to my city collection center and saw a pallet of used batteries submitted for recycling. Among them was an Optimus Blue Top combination starter and deep cycle battery commonly used in boats. This is about a $400 battery so I thought what the heck and took it home to see if it would hold a charge. Sure enough it charged up just fine and seemed ok. However, I know a battery can show full charge but still not have the cranking amps. This is a spiral agm battery so I set the unit accordingly and tested it. It tested good on both CCA and MCA. So lucky me. I also have a car that I just put a remanufactured battery in (bad idea, don’t waste your money) but the cranking rate seemed slow. No CCA rating was printed on the battery so I just guessed 550 and tested it. It tested ok but not great. Lastly, I have an old jeep that remarkably has had the same battery in it for over 15 years. If I kept on a 1 amp charger during periods of no use (a week or more) it will still start the car just fine and continue to start it if in daily use. The load tester showed to replace the battery. That battery is no going thru several repair cycles with a 5 amp NOCO charger. I’ll let you know how it works out. It also worked fine for testing the alternator. In summary, for a diy’er, I think this is a fine tool. It is solidly made, the wires are heavy enough and long enough, and the clamps are very well contructed and hold tight. One reviewer indicated the instructions are microscopic and very broken english and was kind enough to give some alternate instructions. However, it is very intuitive to use so once you’ve done it, you’ve got it. For $25, go for it. P.S. - i highly recommend NOCO Chargers. A touch on the pricey side but very high quality.

We have 3 cars and batteries are 2 years old. We live in desert climate so cold and heat really wear down batteries, typically lasting 3 maybe 4 years. I tested all cars and it should one car was about 50% charged (car doesn't get driven much). Second car which is driven practically every day was about 60%. I bought a trckle charger and both cars recharged within a day. This tester saved me trips to the auto store for testing. Easy to use and a must Car tool to have.

Inexpensive and works really well. I had a vehicle with a brand new Interstate battery from Costco and the car failed to start every few days. I spent a LOT of time trying to find a parasitic draw and not finding one, I decided to use this to test my brand new battery. The tester failed the battery and when I took it to Costco, their tester said it was good. I was adamant about the battery and Costco, of course, replaced the battery for me. I haven't had any problems with the new battery. So, this little guy actually gave a better call than the Interstate tester that Costco uses.

Identified a dead cell in my battery. Easy to use, no complaints here!

Looks good, but it would be nice to know what all those abreviations mean, all i know is the CCA one, the rest i had no idea

eine schnelle hilfe für zuhause,funktiniert und einfache anwendung!

MUY BUEN PRODUCTO

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.

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!!!

This product is damaged please kindly guide next process of warranty