KONNWEI KW600 Car Battery Tester 12V Professional 100-2000 CCA Automotive Battery Load Analyzer and Alternator Tester Waveform Voltage Test for Car/Boat/Motorcycle…

I used the Konnwei battery tester on two cars (one very old, one brand new), and 4 small lead-acid batteries used in a UPS (Uninteruptable Power Supply). The new car had a battery that was in very good shape, but didn't have much of a charge, as it was sitting at the dealer lot, and was shipped from abroad. The new car was a 2019 Hyundai Kona with a 60 AH, 640 CCA AGM battery, and it was at 100% SOH (State of Health), but at 56% SOC (state of charge). After charging it, the Konnwei unit showed the charge up to 98%. It is important to keep lead-acid cells near full charge, as if they are allowed to sit partially discharged, they will form sulfates on the plates, shortening the life of the battery. The second battery, on a 2003 Hyundai Santa Fe was about 3 years old, and the car isn't driven much, so the battery loses its charge because of typical parasitic current draw from the on-board computer, clock, radio, etc. The pictures show the SOC, SOH, and a photo of the Konnwei connected to the battery with a disconnect switch on the battery. While the battery is good, it shows 82% SOH, as the photo was taken at 28 degrees Fahrenheit, and lead acid batteries don't have as much 'get up and go' at lower temperatures. The four small lead-acid batteries that I checked that came from a UPS were 7 years old, and only showed about 2% SOH, so they were ready to be recycled. I also like the feature where you can get an 'oscilloscope' style display (graph of voltage over time during the car starting up), and so you can see if the battery is getting near end of life, or is still good for a few more years. Both batteries in both of my cars showed good starting performance at 30 degrees Fahrenheit. This is a must-have for folks with cars more than a few years old, as you will know when to replace the car battery before it gives you trouble, and leaves you stranded somewhere. This unit uses a new technology where it judges SOH from the rated CCA (cold cranking amps) and the internal resistance of the battery. An excellent tool to add to your garage.

Battery Tester was everything it was described to be, packaged very nicely, looks very professional. No internal battery needed just hook it up to your car battery and it comes on by itself. Much better screen than those other testers out there, easier to read and gives you a very bright readout. Measures everything you could want battery voltage, cranking amps and charging status. I have tried a few of the others and this one is faster with the tests results. Unit has a great warranty and you can even update the software on it, unlike most of the others. Case is plastic but it is very solid, it has nice long cables on it and the alligator clips are really heavy duty with great bite. Instruction book is nicely laid out but honestly it is so easy to use you won't need it. Like the others there is no case but the box it comes in is very strong with a nice compartment insert, which is great for storing. This one has everything you could ask for in a tester, don't waste your time with the others. Seller is very professional they know how to take care of there customers.

I found this to be easy to use and the instructions were good. I would have given it 5 stars but the screen is not very bright in sunlight. In addition it worked well on my truck’s flooded battery, but had trouble on my Chevy Volts AGM. The Volt obviously does not have a conventional starter motor and generator. MGA (the generator) functions as a starter for the ICE. It runs off the HV battery, so no typical start chugging involved. Therefore I cannot determine how to check the CCA, and do a thorough analysis of the battery. The book does not address this and I have not heard back from the manufacturer yet. Any thoughts would be appreciated.

KONNWEI KW600 Car Battery Tester 12V Professional 100-2000 CCA Well worth the price. Works on lawn mowers so I get peace of mind before taking them into town.

While viewing DIY auto repair channels on Youtube, I came across Conductance Battery Testers. While looking up a few models on Amazon similar items came up such as this Konnwei KW600. I saw some videos and looked at the specs. Obviously, I had my doubts about something inexpensive doing so much. I received the product the next day and tested a deep cycle AGM battery out of the boat, then my car and then another car. It took me more time to open the hood then it did to do the testing. A main feature I looked for was the milli-Ohms to help me determine the health of the battery. This product does it all for testing my batteries, alternator and starter. There may be more expensive one out there, but I can't see what they do that this doesn't. This is almost as much fun as finding Pokemons. I'm looking for more batteries to test. I would recommend this product to anybody who doesn't want to get scammed by a dishonest mechanic/shop. Know what is wrong with your battery, starter or alternator, then find the best person to fix/repair/replace the part if you decide to let somebody else do it. The knowledge will save you and your family $$$. I think anybody of any age could use this device since it is very intuitive. I'm now looking at more of their products for diagnostics.

This tester is so useful. I recently had to test, charge, and reinstall a car battery a couple of times because we couldn’t get t to the root of the problem right away. That’s what made me start looking for a tester that would tell me more than just the battery’s voltage. Without reading instructions or looking at all the tester’s option, I was quickly able to test the battery’s terminal voltage, the cranking voltage, and the car’s charging system. The tester only required that I input the CCA (cold cranking amps) of the battery being tested. These are usually the larger numbers listed on car batteries. There are other options to test AGM, SLA, and other types of batteries. I feel like this is so useful since I have just about every type of battery out there in kids’ toys, mower, alarm system, and UPS battery-backups. Another really useful feature is that the tester will tell you when something is normal or within a normal range. That’s great if you’re like me and have a hard time remembering specific details like that. Last but not least, I love that I can get firmware updates from the manufacturer (which btw I did). I imagine that like all modern electronics, bugs can be fixed this way, and new features or improved performance can also be delivered via the updates. Now the hardest part is deciding if I’m keeping the tester at home or carrying it with me in my truck at all times.

I wish I would've had this when my daughters Honda alternator died. My voltmeter showed it was putting out 14 volts as shown by my ordinary voltmeter. If I had this product at that time, I could've done a charging test and seen that the alternator was actually not charging the battery (in conjunction with a carbon pile tester) and would've also diagnosed the a/c ripple that my son's subaru had in his failing alternator. I could've saved myself $250 on my daughters car, which is the difference in price between doing it myself and hiring a mechanic to do it, as changing an alternator is fairly easy compared to most repair jobs on a car. This is a neat little instrument, and I like it very much. I will use it in conjunction with a carbon pile tester to do a complete test of my vehicles charging systems in the future. I would also recommend buying an amp clamp instrument to see how much current the alternator is putting out at various engine speeds, and see whether the battery is taking a charge from the alternator.

I have tested this meter on 2 cars and 4 standard flooded batteries. It appears to be accurate to withing 1% when compared to my Fluke meter and O'scope. Mine reads a consistent .05-.07 volts low which is fine and given the price rather surprising. The ripple reported is in align with my scopes readings but the ripple waveform display on this unit does not have any voltage grids. My scope does show a higher spike which may be the ECM controlling the regulater that does not show up on this unit but since I dont have a truly bad alternator I cant compare what a bad waveform looks like. The only thing that I dont care for is that you cannot record the alternator ripple waveform. The waveform selector only records on a 3v to 15v scale so any ripple in the 50 to 200 mv range is invisible. It would be nice to have a selection for an AC coupled 1 or 2 volt range like that displayed during the alternator test. Being able to save that waveform for later comparison would allow an early detection of a weakening diodes. This may be asking too much of a $50 meter but since the display is there in one test why not allow saving it in another. The instructions could be a bit clearer for those not familiar with this type of meter and it is possible to get a bad battery indication on a good battery if the small teeth on one side of the clips are not making good contact. Those little teeth are where the wires connect and since we are trying to measure thousands of an ohm those teeth need to be in good contact. The other thing to mention is that for a good ripple reading the red (positive) lead should be connected to the alternator output instead of the battery. Resistance in the wire and connections between the alternator and the battery could dampen the reading but for simplicity the battery works unless you get an abnormal reading and want to investigate further. Other than these few things which could be fixed with a bit more info in the manual and maybe a software update I think this is a very valuable tool and would recommend it to anyone with an interest in checking there car or there mechanic. And dont forget to take this along the next time you need to buy a battery, it might stop you from getting stuck with something that has sat on the shelf for months and is already starting to sulfate. Edit: I find that I must edit this review. The day after writing the original review the meter stopped working properly. I did return it for exchange and received a new one. After more testing I have discovered that the ripple test gives a reading 1/2 of the total. I dont know if it is reading only the ripple above or below a baseline but does not give peak to peak readings. I have also discovered that the print function does not work correctly. While I can playback the waveform recorded when I try and upload it to my computer for printing only the last 2 or 3 sec. of the waveform actually upload and the sample rate must be very slow because rounded peaks are flat topped making peak reading impossible. I have emailed the company several times and they do respond but dont seem to understand and only quote the manual. This may just be a language barrier but it is frustrating. I hate downgrading the rating but I am not sure of the durability at this point and it does not fulfill all it promises, because of this I am hesitant to recommend purchase.

facil y pratico

Muito bom!

Usage pro, très efficace

Collegato direttamente alla batteria e preciso. Poi fare pure test della carica batterie con vizualizatione tipo oscilloscopio a vedere la forma del segnale. Lo uso insieme a "Doctor 50-Telwin". Per me va bene. Grazie.

Works very well, is very sturdy and easy to use. You get a lot for your money!