CARTMAN 12V Car Battery Tester, 100-2000 CCA Load Tester Automotive Alternator Tester Digital Auto Battery Analyzer Charging Cranking System Tester for Car Truck Marine Motorcycle SUV Boat

I frequently test car batteries at our small dealership prior to charging them with a battery charger. I was looking for a cheap and easy method to quickly test battery charge levels and potential alternator issues. The schumacher battery charger I have has a test/charge meter but it is a complete joke. I've been using this little tester for a few days now and it works great. I've found it to be fairly accurate for a general reading. There is another unit similar to this one by Pulse Tech but I decided to jump on this one because of the lower price and I like that this one comes with high quality clamps. The others in this price range only have needle/pointy type receptacles that are less convenient when you need your hands to be free. I also don't like coiled type cords because I've had bad luck with them beginning to fray and lose connection. This tester doesn't tell you the percentage of the battery level as seen in the picture- only a low, mid and full. I'm assuming that low is ~25% middle is ~50% and full is ~75% charge and above. Thats my only gripe with it- the instructions dont tell you what the levels are and I'm assuming a charge of 72% for example would light up as "middle". The instructions are poorly written in "Engrish", they could be a little clearer. For alternator testing, I tested a Lexus SC400 with a brand new battery that was known to have a bad alternator. You rev the car up to 2000+ rpm and connect the clamps to your battery. The tester showed the alternator as faulty so I can confirm it works. I obviously wouldnt put my complete trust in this unit to diagnose everything since it's usually not as cut and dry, but it will lead you in the right direction. For the price, you can't go wrong. Build quality is decent and its no frills.

works well, I used for testing my old batteries and also new batteries, found out new batteries were defective and was able to replace them

Works pretty good.

Nice little product

I have a car where the battery isn't holding a charge when the car is off. It only has about 20K miles on it. I figured either the battery was bad or the alternator possibly has a short, so I got this thing. First the cable is barely long enough to reach the terminals on my car. My car has the battery in the back under the floorboards of the trunk. Under the hood there is a (+) terminal where you'd expect a battery to be and the (-) terminal about 10-12 inches away on the firewall. I had to tear the cable black/red down the middle to the base of the device to make it be able to reach. Then the clips were barely big enough to get on the terminals which aren't that big. With my car engine off the bottom most light (OK) was red and none of the low/mid/full charge lights were on. The minimal instructions are rather confusing. It seems this either means the battery is dead or able to be charged. I started the car and it had enough juice to start up without being jumped so it couldn't have been completely dead. Once the engine was on, the "OK" turned off and the "full" light turned on. So now my battery went from dead to full (which I know it wasn't cause the care barely started). For the alternator lights it flickered between good and fault before settling on fault. It says you should accelerate to 2000 rpm to do this check so I did that but got the same results. So if this is to be believed I need a new alternator and not battery. If it was the battery I could change it myself; alternator I'll have to bring it somewhere. Guess I'll see when I take it in what is actually wrong with it; not sure this really helped me figure that out.

I own a very exotic car, the type where it costs almost 300 dollars to have the oil changed, last week it started to show me code numbers which meant it was having an issue. I knew the shop would charge me a few hundred dollars just to diagnose her so I decided to try and figure it out myself even with no background in auto mechanics. After researching on the internet I discovered that the issue lied within the boundaries of the alternator, battery, wiring or a fuse. I purchased this item due to the simplicity of how it works and with it I was able to remove the alternator and battery as a possible issue, in the end it was a fuse and I was able to repair the problem for just a few dollars. So to the developer of this item I give you my thanks

For about 2 years now, the ECO mode on my 2016 Mercedes E350 was not engaging. After looking around online, I thought it might have been the auxiliary battery in the trunk and tried replacing that, but to no avail. I started to have the feeling that my main battery may actually be the cause, and only because it shuttered a bit on a very cold morning a couple of months ago while trying to start the vehicle. I purchased this to be able to more accurately check the battery, thinking the cranking amps had declined over the years on a battery that was about 6 years old already. Sure enough, the battery showed to be bad. When started, the unit was able to show the alternator was charging just fine as well. I replaced the battery with a new one, and the ECO mode works perfectly now. Problem solved! Unit is very easy to use and self explanatory. Good way to see if your battery needs to be replaced or alternator not charging correctly.

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Working so good

Bis jetzt, bei mir alle Testen mit Bravour bestanden . Einfach super Teil.

This little gizmo tells you all you need to know about battery and charging. It is however really small and the clips are not big enough to grip battery posts . Perhaps pointed probes would be more suited to job?.

منتج عادي الصراحه بعض الاحيان بض السيارات يقراء صح على السيارات (الياباني) ويقرا نص نص على السيارات (الامريكيه) اعطيه 3 ونص نجوم