La Crosse 911-65557-INT Portable Digital Battery Tester,Black

Haven't had this product long, but I have tested a good collection of batteries, all types except button cells. The build quality is very good, the unit is compact and convenient to store, handle and use, the display results are pretty consistent. I have checked its readings against 2 different meters, and the readings are consistent with both. I've used a lot of such devices over many years, and this is a good one. The product description doesn't specifically mention testing regular zinc-carbon batteries, but it does that too.I just returned another one (from China), replaced it with this one. I may just buy another while the product still exists and is good. Unfortunately, I've seen too many good products disappear, to be replaced by junk.

Popping batteries in the slide is quick and easy, and the display is excellent. It's well made and well worth the money. I keep a variety of batteries on hand, and the only ones it can't read are the 18650 flashlight batteries. My charger provides a readout for those.

Easy to use. Great size for take with you and storage. Reads accurate. Durable.

Great small battery tester and just what I needed. It seems to be pretty accurate, easy to read, and I like the small form factor. perfect size and weight for my flight bag. So far, it's holding up and I would definitely buy it again if I had to.

This La Crosse battery tester is an excellent product. It works with a wide variety of voltages and chemistries. I have tried it on alkaline 1.5V (AA, AAA), USB lithium 1.5V (AA), NiMH (AA, AAA), and lithium coin cell 3V (CR2032, etc.) batteries and it appears to give timely and accurate measurements. I love that it is compact so it is easy to store and use on the go.There are a lot of battery testers on Amazon, most of which are Chinese knock offs/generics of a few designs. I appreciate that La Crosse has a unique design with a clear digital readout. You need to know what voltages mean for your particular battery chemistry (1.2V - 1.31V is considered "full" for NiMH batteries, for example), but I much prefer seeing the true voltage readout than generic terms like "good" or "empty". If you are wondering which of the forty different "caliper" or "zigzag" types of battery testers to get on Amazon, don't bother, just get this La Crosse 911-65557-INT one and be happy.The La Crosse 911-65557-INT battery tester is self-powered: powered by the battery that you are testing. There are two points to note about this design. First, if the battery you are testing is truly "dead" (below some critical threshold), nothing will display onscreen because there is no power in the first place. Second, since it is self-powered, the unit itself does not require its own battery so it will always "work" and will not get a corroded battery case because there is no battery case in the first place. If you really need to measure voltage down to the last 0.1V, this product is the wrong product for you. However, if you want to get accurate readings of batteries in various stages, this product is the best one in the price range.

Very handy little item. We have tons of batter operated gizmos. When they act up I usually switch batteries and off I go. I've been saving over 65% of the batteries 🔋 I'd normally toss in the can.

As musicians, we go through a lot of batteries. AAs, AAAs, 9volts, and tiny lithium 2032 batteries.This is the best designed battery tester I’ve ever used. It gives you an actual voltage reading on the display, is very compact and easy to use. Highly recommended!

This battery tester is wonderful. I've had one with an analog gauge for many years, and I was never sure what the charge level actually was. With this one, it reads the voltage directly, and it has 3 set points (3 switch positions), one for Alkaline, NiCd and Lithium. So the charge idiot light works right with each type of battery as well. Reads to 2 decimal places, and seems to be both accurate and consistent. Easy to put the battery in place to test. Works with AA and AAA batteries, and I think 9V but I have only used AA and AAA so far. Simply a wonderful tester. Price was right, too.