BT50

If you are reading this you probably have concerns over the health of your battery. Maybe you have had trouble starting your vehicle or maybe you just want to be sure your battery isn’t likely to fail and leave you stranded. You want it checked but don’t want to go to a garage and pay inflated diagnostic fees or and have them tell you that you need a new battery or alternator. This device is simple to operate. Just connect to the battery terminals, red to red and black to black, and it switches on. As it switches on the Bluetooth symbol lights up (more later) and then the battery voltage appears. If you are not sure what a good voltage is there are 3 leds under “Voltage", these are “Full”, “Medium” and “Low”. So within 10 seconds you know if your battery is fully charged. Now, even a “Full” battery can have issues so you can do a “Health” test. This puts a load on the battery and checks how it performs. Hold the “Test” button for a few seconds and one of the “Health” leds will light. So within 20 seconds, with no automotive knowledge, you can get a reliable indication of your battery voltage and health. Saving you anxiety and a visit to a garage or worse, a call to the breakdown service. Now, I mentioned earlier that this also has Bluetooth capability. It can connect to an app that you download on your phone that allows you to do more testing and even lets you monitor your battery over time. If you want to check your alternator there are options in the app to do cranking tests. These are explained as you go through them. You can see from the video how easy it is to do the tests from your phone. Download the app and then connect the tester to your battery. It will then pair and you can run the tests. I did it on a Samsung 23+, so it even works on the newest phones. So, if you want an simple to use, inexpensive, battery tester, that has sufficient features to test the basic functions of your car battery, then this is a good choice. But it also has some features that allow you to do more advanced testing via a free-to-download app and an inbuilt Bluetooth connection. At this price, with these features, it makes it a great choice.

I have been wanting to try a battery tester for a while now, with four cars at home - three of which are used infrequently and on/off trickle chargers, I decided to give the BT200 a try and see how the various batteries were doing, what kind of condition they were in, and how the results compared before and after trickle charging. First up was our "daily" fitted with a Stop-Start EFB battery. This is a few years old so was interested to see what sort of health it was in. I hooked up the BT200 and it sprang to life. CCA (Cold Cranking Amps) is the test of choice so I chose to do the battery test, CCA, set the amps value (which can be found on the battery itself) and away the test went, coming back at 95% healthy and 100% charged. Not bad. Interesting as the Stop-Start function no longer works in the car and I always assumed it was because the battery was getting old...not so it would seem! A new EFB battery is around £150 so I won't be forking out for one any more knowing the battery is still in fine fettle! Onto the next car. The battery is tucked deep into the side of the boot space and very difficult to access the terminals with limited space. The croc clips on the BT200 are pretty chunky so the problem was exacerbated somewhat. I struggled to get a good connection onto the battery, and as a result the first report came back with very strange voltage readings and a 4% rating for the battery health. After fiddling with the connections a bit more I got the correct reading - 36% healthy with 0% charge - which seemed about right as the car hasn't been used for a few days and hasn't been hooked up to the trickle charger. At this point I hooked up the car to my CTEK trickle charger to test the result the next day, which I did - and the result came back with a 100% charged, 100% healthy battery! Excellent and interesting to see the change after charging. The last car to try has a relatively new battery (3-4 months old, however the car has not been driven at all in this time, and sits on a trickle charger). I was expecting this to give a perfect result - and was surprised to see just 63% health and 0% charged! Confused, I checked the charger only to find it was disconnected at the plug, I have no idea how long for! So I plugged it back in, and ran the test again the following day to find it back to 100%/100% health, excellent and again very interesting to see the change. Again though, the battery on this car is in a deep well with limited space and as before I struggled to get the chunky clips in place, having to do several tests and re-attachments before I got the correct reading. So in summary, a very neat, compact device that works well when properly attached. If you get poor results from a battery that you think is ok, do check the connections and runs additional tests just to make sure you are getting the correct results. I should stress this wasn't an issue on my main car as the battery was easy to get to with plenty of room around the clips to attach them properly. The manual does also specify that the connection should be good and the terminals clean to ensure you get accurate results. I guess I was just a little surprised at how sensitive the device was. My only disappointment is that the manual - although it looks pretty big - is only small (with multiple languages) and doesn't really go into any details of the other tests - what they are for and how they work etc. I will mainly use this for the more common CCA test, but it would be interesting to find out what the other tests are for and how I can use them. Other than that a great piece of kit, well made, nice clear backlit LCD display, and simple responsive menus. Highly recommended if you are after simple-to-use tester that doesn't cost a fortune.

Not bad product but I found them cheaper on Tiktok shop

Everyone who works on their own cars should buy one of these. Great value for money and peace of mind. The unit is well built and sturdy and just feels well made and durable. It is literally just plug and play and is very easy to use. You do have to input some of the battery details which is a bit of a pain if the battery is in the vehicle and you are unable to see the details on the battery or if the stickers have been removed or worn away. It does mean that you may just need to remove the battery just to confirm details but this isn't the end of the world and once removed once you will know them for the future. The instructions and ease of use is clear and simple and it returns the results straight away. I have 4 vehicles in my household and a motorbike and I have checked all the batteries and since had to replace one that we thought was going bad due to start stop not working and this machine confirmed it was the battery that was the problem. It's a good size and could be kept in a vehicle or workshop. The only downside I would say is the lack of case or bag. The unit just comes in a box and could do with a case or something to keep it in. Would definitely recommend.

We have two cars in our household and since lockdown we have had battery issues on both of them due to their lack of use. The cars still start ok but the stop start fails frequently and the motorised tailgate refuses to open or close. As a result i looked at purchasing new batteries for both vehicles. After researching the prices for an EFB and an AGM battery i was shocked to see the prices! As a result i decided to purchase this tester to actually check the health of the batteries to see if they indeed needed replacing. I charged both batteries first with a smart charger and then connected up the Topdon, unfortunately both batteries indicated that they needed replacing. One displayed a heath of 11% and the other 53%. The device is super simple to use, it tests a wide variety of batteries including wet/lead acid/AGM/EFB. Once connected to the battery terminals you have to select some input data such as the type of battery and cold cranking amps, this information can normally always be found on the battery itself. Within a few seconds you get a detailed results screen indicating if the battery is in good or bad health along with some breakdown details (see my review pics). There are various other testing options available in the menu such as charging test, cranking amps and cold cranking amps tests. The device is super simple, anyone would be able to easily use this to test their vehicle battery or any other battery for that matter. It's well made and feels chunky enough to withstand some knocks if you were to drop it. Great device - highly recommended! I hope that you found my review helpful.

First day receiving this tester i checked my batteries, and suprisingly found my expensive 2 month old Yuasa motorbike battery to be bad! Would never have known otherwise. So thats been sent back to the supplier. Already this tester has payed for itself! Very easy to read the display, instruction booklet is a little basic so worth watching a couple of video reviews to understand how to use the functions, but its easy once you know. It will also warn you if its not connected well enough to the battery terminals. Takes its power from the tested battery so no internal battery to replace ever. This product seems to be highly recommended by many, does everything you need to check any battery on car or motorbike or van etc. Cables and crocodile clips are very decent, they have recesses along the sprung loaded jaws which grip onto the battery terminal securely, and serrations on the end if you have to connect them at a different angle to the battery terminals. Would be nice if it had a storage bag supplied but you likely will keep it in its packaging box when not used. Very quick to determine battery condition. Really useful tool for home mechanics.

I wanted a tester to assess an electrical problem on my van, before playing parts darts with the electrical system. The Topdon BT200 arrived quickly (the day before it was due) and well packaged. Out of the box the tester feels like a more expensive piece of equipment, with a ruggedised rubber cover and positive buttons. The battery clamps have a strong spring to assist good connection (more later) and appear to be copper plated (they are attracted to a magnet, so I guess copper plated steel). The tester is powered by the battery you are testing, so there’s not many clues on the device itself before its connected. The instructions seemed clear enough to me. Once connected the screen is easy to read. Testing results were found to be slightly variable, in particular I suspect internal resistance measurements (and subsequent battery health evaluation) rely on a good connection across the terminals. Making sure the battery clips are well placed with a firm grip on clean terminals gave reproducible test results (others have mentioned some considerable variation). In my case, the results indicate that my battery is in reasonable condition, so I’ve avoided an unnecessary cost. I’m happy with that. Overall - nice bit of kit.

Very good tool Easy to use

This is a terrific unit. Easy to use. Saves test results. Compact and extremely well built. Although the manual refers to a BT20 app, it is not currently available with that name. The developer has provided a work around. Scan the bar code in the manual and it takes you to a YouTube video. You’ll need to download the TestFlight app and the Battery Lab app. Test Flight will provide a code to use to open Battery Lab which is essentially the BT20 so called app. It works very well. I have used for accurate readings on our boat batteries and our two autos with no issues whatsoever. Great tool that is a must for any tool box. As always great to have a good idea of your battery’s state of charge before going to the dealer for service!!

Si quieres rápido y eficiente este es el equipo ideal.. muy satisfecho...pero siento que la aplicación está demás!

Shipped fast and received days early. Great auto / truck state of battery and charging tester of system. Great seller to buy from. Easy to use and the cable length is good. Excellent tool to have . I will consider purchasing other test products of this Manufacture soon. Model: TOPCON 200 Battery charging system tester. Very accurate, Must have tool.

Nu testat på flertalet bilar och den stämmer till 95%, är mycket imponerad. Dessutom slipper man krångla med interna batterier då enheten tar sin ström direkt ifrån källan man kopplat in. Önskar jag hade köpt en tidigare då det varit till mycket nytta.

Great quick battery tester. Covers almost all type of batteries that Ive came around Very accurate and easy to use. Helps to sell more batteries for technicians out there. Quality of clamps are also great!! Earns all 5 star for its price point