DLYFULLUniversal Battery Tester with LCD Display Battery Checker Voltage/Power for AA AAA C D 9V 1.2V Alk & Rechargeable CR2032 CR123A CR2 CRV3 6V 12V 3.2V 3.7V 18650 1.5V/3V Button Cell Batteries

DLY make some of the best battery testers and this is also excellent. It shows the battery voltage and also the percentage of charge remaining. So easy to use, so cheap to buy. One of the best testers.

one of my best purchases. truly checks voltage for practically any battery. good design - easy to use

not bad but awkward to use.i have + old one from Tandy's it is great no batts needed to power it but the part that checks the button battery broke off or I wouldn't have needed a new one.u have to hold batts upside down to test + hold the negative lead to the bottom of the batt.but I think it will get easier in time so not bad + at least it tests about 13 batts.so quite good I'd say.

For years I’d been testing my batteries with a multimeter, which showed me the voltage, which does drop as the power remaining drops - but not by much. It is not a good way to test a battery!This device is excellent. It copes with pretty much any battery type, shows the voltage AND the charge capacity remaining.Other reviews have commented on the fact that it is hard to use because of the need to use the flying lead on the negative end/part of the battery. In practice this is not an issue at all - it IS easy to use.

I find the results a little bit hit and miss, in my experience. Take your time, and try not to test each battery too quickly as I have found different results, including errors.It is important to use the correct section of the tester to obtain accurate results.It's a little fiddly to use.

I did not want to spend a lot of money on the ZBT mini tester so I decided to give this tester a go , which is still the most expensive tester I have bought to date by far ; I was expecting a reliable and versatile tester for this amount of moneyI held a battery steady on the contact and made repeat tests using the probe to check for consistencyResults varied between 15% and 85% for the same battery over about 6 tests!I agree that this way of testing is awkward ; results seem to depend on where you touch the probeI was really hoping for better from this tester and am returning it

Exactly what I wanted, good price and fast delivery.

This tester just works great. It takes the guess work out of, are the batteries dead or is it something else.