La Crosse Technology 911-65557-INT Portable Digital Battery Tester

Perfect for my usage as I use all rechargeable batteries in my home especially for flash photography….doesn’t require any battery or charging for the tester

This is a very simple, versatile and effective tool for testing of batteries at home. Very easy to use and digital display bars really help to know the charge status very effectively. Great and must have tool for this digital age with 10s of batteries lying around at home for so many applications. Very reasonable priced for the quality of the product.

I volunteer for a non-profit replacing batteries in donated watches. I also use illuminated magnifiers and flashlights to see all those tiny parts (and *find them* when they *launch* themselves across the room. So, batteries of various sizes (D, 9V, AA, AAA plus perhaps fifty sizes of silver oxide, lithium, and alkaline "button batteries) are my daily concern. This seemed to fit my needs best. To use it, simply extend the orange terminal slide out wide enough to let you place the battery against the inside terminal, push the orange slide back in till it touches the other end of the battery and read the voltage and the device's opinion as to whether the battery is dead or on its last legs. This tester is compact, doesn't require a power source, adjusts to fit almost all battery sizes, and is accurate enough to let me know if a battery has enough charge to power the watch I'm working on. It fits into my tool kit, doesn't involve any cables and is more rugged than a traditional voltmeter. And it doesn't cost much. I can't speak to its longevity, but it seems durable enough for my needs.

Excellent produit. Belle qualité, très compact, facile d’utilisation, grande diversité de piles dont les piles rechargeables, lecture du voltage interne et de l’énergie résiduelle, pile interne non requise pour son fonctionnement. Vaut les quelques dollars de plus.

Muy práctico probador de baterías, sirve para todo tipo, muy recomendable.

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.

As advertised. Tiny but works well