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James R. Stelzer
2025-09-05 10:32:49
I have many automotive batteries, boat, car, camper etc. I always want to make sure a battery is shot before I buy new, and sometimes it is nice to know a battery is on the way out before it leaves me stranded.Likes has no internal battery as it just used the battery your testing to power itself Seems to do well as I tested in on newer and mid-life and a old battery, I got health readings from 100 to 60% and even one that said battery was no good (and it was) It also has a few other test functions for charging and starting of vehicles. Since I did not have a interest in those features at this time I did not test them. It was very easy to use!Dislike. The original packaging was OK, but now that I have it out, I would have like a little bag or better packaging that it would be easy to put back in. I want to keep it in one of my vehicles tool bins so it is handy when I have a problemWill find a cloth back with draw string at some point in the future.Would buy again.
Awalk14
2025-08-30 13:36:27
Works as advertised and easy to use.
BadgerDan
2025-08-12 14:43:18
The Topdon is a great unit that is easy to use and also allows you to test the alternator function on your vehicles. The quality of build and the clamps are top shelf. I have had fun using the my Tester and it is a great addition to my garage.
Gerald
2025-07-09 18:29:39
"I used this tester on a 4-year-old battery that I suspected was failing. The device is very easy to use, and I ran all three tests—Battery, Cranking, and Charging. It indicated that the battery was still good, but I wasn’t sure what all the numbers meant. This tester saves the info. So, I entered the results into ChatGPT, which explained that while the battery was still functional, it might need replacing soon—especially in cold weather. With temperatures dropping to -10°F in the mornings, that was valuable insight. Overall, a useful tool for checking battery health!" Based on your battery test results, here’s what each reading indicates about its overall health and performance:ChatGPT results1. Health: 66% – This suggests that the battery has lost a significant portion of its original capacity and is starting to weaken. It may not hold a charge as well as a new battery.2. Charging: 87% – The battery is mostly charged, so it's not a charging issue causing the low cranking power.3. Internal Resistance: 6.3 mΩ (milliohms) – Higher internal resistance reduces the battery’s ability to deliver current quickly, which is crucial for cranking. A new battery typically has lower resistance (below 5 mΩ for a good one), so this indicates some aging.4. Loaded Voltage: 11.94V – When under load, the voltage drops significantly. Ideally, a healthy battery should stay above 12.2V under load. This drop suggests the battery is struggling to maintain power when demand is high (like starting the engine).5. Unloaded Voltage: 13.97V – This is normal for a fully charged battery, but the significant voltage drop under load confirms that the battery's ability to supply power is declining.6. Ripple: 5mV – This is a low ripple, meaning your alternator is providing stable voltage with minimal fluctuations.Conclusion:Your battery still functions but is weak and deteriorating. The high internal resistance and voltage drop under load indicate that it may struggle to start your vehicle reliably, especially in cold weather or under heavy electrical loads.Recommendation:If your vehicle is slow to crank, you should strongly consider replacing the battery soon.If you’re not experiencing cranking issues yet, monitor it closely, but be prepared for a replacement in the near future.Cold weather will make the issue worse, so if winter is coming, a new battery would be a wise investment.
Rory
2025-06-23 14:33:18
Works great and very easy to use
Michelle J.
2025-04-29 15:23:31
Great tool at a great price with nice displays I can show my customers.
Lerp
2025-04-22 11:13:28
Researched a number of devices, and settled on this unit. Couldn’t be happier with the results to date. Use it at the beginning of each month to check the battery status on each of our vehicles. Good quality - would highly recommend to others to consider. Especially like the fact that it doesn’t require its own batteries - which can bleed and ruin the device if not monitored. It gets its power from the battery itself that you’re testing. I did buy a semi-hard case for storage when it is not in use.
KKJ
2025-04-15 13:03:24
Worked great on testing the dual batteries in my dually truck
Customer
2025-03-22 11:54:04
I like everything about this battery tester, the build quality is great, the cables are very strong and solid, the screen very bright and the tester does work great. just connect it to the car battery and it powers up and just follow the instructions on the screen and all is good. every car owner should have one of these testers they will love it. and it tell you your cars battery condition and if your battery need to be replaced. I highly recommend it.
Earl
2025-03-10 12:01:09
Works as advertised. Saves me time and money to find out its the battery not the starter.
Kim Picciuto
2025-03-06 16:10:03
I like this product, it’s not bulky and it’s very easy to use
Client d'
2025-02-13 14:58:53
Very good quality and very easy to use.
Customer
2025-01-14 12:56:10
Should've had one years ago, takes the guess work out of using a multi-meter. a must for your tool box.
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