KINGBOLEN BM520 6V 12V 24V Car Battery Tester, 100-2000 CCA Automotive Load Tester Accurate Digital Auto Battery Analyzer Cranking and Charging System Tester for Cars Trucks SUV Motorcycle

Unbelievable! This gaget works really well! I was skeptical at first when getting this product, I was thinking that.... it's not going to be very accurate. It's actually very very accurate! You can see in my picture that I compare the voltage with my high dollar multimeter. The reading came out exactly the same! The other features that I've noticed that it's automatically reading the CCA. It seems like it was communicating with the battery and tells you all of the battery specifications. It's also can do 6 volts as well.The unit itself is not big at all! You can put it in your tool box with ease! It is very easy to use and straight forward.So if you want something that can read your battery voltage and find out the specs for your battery, you need to get this unit. Well worth the money spent! I highly recommended for your garage..... it'll come in handy.

This small and portable battery tester is pretty good. It automatically turns on when attached to battery terminals.As long as the battery is not too old, it can tell if the battery is good, normal or bad. I tested a very old battery and this gadget will not turn on. Easy to read and use, comes with easy to read and follow instructions . Affordable and hopefully it lasts a long time

I thought this was defective or at least oversold by saying works on 6V. Reached out to the seller and I was told it won't work on deep cycle but actually it does when tested under quick check. It only goes up to 220 ah in the settings and my battery is 225. Soh (State of health) does show fine but I purchased interstate 6v batteries from Costco and every one of them showed 0%. Took the charger to Costco and every battery on the shelf showed 0% soh, it beats me why 210ah battery from interstate would not show more than 0% soh. Every other gc2 and gc10 battery I tested at our warehouse showed more than 0% soh. Baffled why it's not working on interstate 6v batteries at Costco.

The media could not be loaded. This is a fantastic battery tester. It will definitely save you a trip to the auto store to get your battery tested there. This is a very simple to use. It is powered by your car battery. So there is no on and off button. When you connect the cables to your battery the tester will automatically turn on. Following the instructions you will need to pick your battery type which most likely will be 12 volts if you're in America testing your car battery. Then you need to check your cold cranking amps or CCA. I recommend you make sure you know what your CCA is prior to starting this so you can input it in right away when you are prompt. Mine is a larger battery because I drive a truck so it's 710. When I tested the battery it ran at 516 on the final run. This is lower than the 710 but considering that my battery is from 2018 this is fairly accurate. It may fluctuate if you keep on testing it as your engine is off so the alternator is not charging your battery. So every time you run a test it drains the battery just a little bit more. To get an accurate reading I run about three tests and then get an average. I love the digital display which is great. My old battery tester was analog that just had lights that would light up. This gives you an actual number rating which is fantastic. The cables are quite long so you don't have to be hunched over the battery risking accidental cross wires and possibly shocking yourself by accident. The clamps are pretty sturdy with the spring strong enough to withstand a light tug and won't come off the terminals. I like the fact that if you accidentally connect the negative to the positive and the positive to negative it will not ruin this tester. It will just blink to show you an error. All you have to do is just reverse the cables and put them on the correct terminal. This is definitely a must-have for the do-it-yourself mechanic. If you have old batteries this will give you a very good idea of whether you can save that battery or you need to complete replacement. It's small enough to keep me your car which is great because that's where I'm going to keep this one. And the price points you can't beat it.

The media could not be loaded. I run an automotive repair shop and recently lost my battery/electrical tester so I looked for a quick and easy replacement Until replacing it with a more expensive tester. So when I got the tool, my first thought was, it was not gonna be very accurate, but to my surprise, this tool was extremely easy to use for testing batteries and very accurate!! It also test the starters and alternators for load/ripple. Absolutely amazing deal for the money. Testers that do this many features typically run upwards of $150 and if you want printer with it, obviously it would be that. My only complaint would be that it feels very light and a little bit flimsy so if it fell on floor It would possibly break easily. Lastly, the complaint I have is for the screen. When using outside on a sunny day, there is a lot of glare and it’s very hard to see but if used indoors, it should not be a problem. It would be nice to have some sort of screen or be able to turn up the brightness perhaps. Other than that less than $50 I don’t think there’s anything Anyone could complain about this thing is fantastic and very quick!!! I’m thinking of keeping this in my shop for a bit just to Perform. I’m surprised. I’d rate it 4.5/5

We live out in the country on two acres in southern Indiana. We have an ATV, a lawn tractor and a zero turn mower in addition to our two vehicles, a sports car and an SUV. This tester handles all of the various types of batteries for each of them. Recently, the battery went totally bad in our lawn tractor, almost without warning. Very inconvenient. Now I can monitor all of the batteries in every vehicle and piece of equipment so no more suprises. Knowing in advance that a battery is failing allows you extra time to shop for a good deal on a replacement. You can't beat the competitive price on this model...