Numeric type display battery tester Bulti-in on-load resistor for accurate results Auto polarity indication of battery Non polarization testing terminal Adjustable sliding arm for different size of batteries Suitable for all the 1.5V, 3V, 9V batteries (AAA,AA,18650, button batteries etc.)
For long, I have been looking for something like this to check the charge level of batteries. I am glad that I finally found this in Mini-in-the-box. The product really works and I have been able to check all the open batteries at home and office and sort out what is worth keeping and what I should dispose. I recommend this as a must-have in every house.
Works as expected, fresh/good batteries show 1.50V and used ones less, like 1.42V for halfway used ones and 1.20V for close-to-death ones. 9V test works, too. Applies slight load on battery so that does not falsely indicate floating charge voltage. Mechanically very handy to use and thus quick in use.
Wow. I am pleased with this battery tester. I didn't expect much because of how inexpensive this tester was, but for the price, it is worth buying. I purchased this battery tester because I have quite a few radio controlled helicopters and use a lot of rechargeable AA batteries. Some controllers seemed to die quickly. Now with this tester, I know why. I have found a couple of rechargeable batteries that are completely dead. My charger says they are charging but obviously it's not reading the dead batteries correctly. I used this tester to test 72 batteries and found 3 that were dead. Great inexpensive tester. I give it two thumbs up. Thanks MiniInTheBox for offering a low cost tester that actually works.