Battery Tester

In our days of rushing from one place to another, it has become fashionable to surround ourselves with disposable objects. We throw out old things and quickly replace them with new ones. Not only do we damage the environment around us, but we also hit our wallets hard. If you want to change this and live a little more environmentally consciously in the future, the first step is to buy a battery tester. Why is this so important? Because we can check how much energy is left in our batteries. Battery testers are compact devices that measure battery voltage and charge status, giving you useful clarity on whether many of the batteries in your household are still usable or can be thrown away. Read more...

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• For batteries AAA, AA, C, D, 9 V and 1.5 V, 3 V button
• Type: UNI D3
• LCD display
• Charge resistance value for AA, AAA, C, D, 9 V universal
• Load resistance value for button batteries: universal
• Dimensions: 110 × 60 × 25 mm

Gross price (including 27% VAT): 5.31€ (Net price: 4.18€)
1 products in total, page 1: 1 - 1 / 11

Battery testers are a favourite tool for frugal people!

All electrical appliances require a constant and fixed power supply and therefore have very limited mobility. In contrast, the pencil battery is a tried and tested alternative that has been around for decades, allowing you to take your energy with you. However, many battery-powered devices do not show their charge level. This often leads to unpleasant surprises, for example when your pocket battery runs out and you can't listen to your MP3 player while running, or when your child's favourite toy gives up at home for the same reason. That's usually when the guesswork starts. Which of the items in the home still powers the musical bee? This is where a battery tester comes in handy. It helps to ensure that only the batteries that are really dead are thrown away, and that you don't waste money buying new ones too early.

How else can you save money with a battery tester?

When a pencil or permanent battery has only half or a third of its original charge capacity left, it can wear out quite quickly if it is placed in a high-powered device. However, there are devices in our homes, offices and workshops, such as wall clocks, that can be kept running longer with the right battery because they don't require as much power. So, before throwing away a battery, we recommend using a battery tester to measure its capacity and placing it in the device in light of this. By paying attention to such small details, we can save ourselves and our families from further expenses.

What to look out for when using a battery tester?

Over time, many batteries can accumulate in your home or office desk drawer or in devices that are not used for long periods of time. Often, we don't even know when we bought them, so it's not clear if we can keep using them. But before we use a battery tester to measure the voltage of a pencil battery, for example, we need to take a good look at these miniature energy cells. If they are corroded, deformed or already leaking acid, they should be taken to a collection point immediately for proper disposal, thus protecting the environment. Failure to do so, and placing the damaged battery in the battery tester, will not give a usable result and risks the tester itself malfunctioning.

The battery tester is suitable for many battery types

Manufacturers often use the wording that the battery tester can measure the performance of commercially available batteries. However, which ones depends on the device. For example, if it is important to you that your battery tester can measure the capacity of button cells, we recommend that you refer to the information in the product specification. If the batteries are only indicated by codes in the product description, please ask the seller for assistance. But before you buy the most expensive device, which is suitable for almost all batteries, take a look around your home or office to see what batteries you are using.


A AA, AAA batteries all refer to pencil batteries. the C designation refers to the slightly plumper 26.2 mm diameter long-lasting battery, while D refers to the so-called goliath battery, which is 34.2 mm in diameter. 9V is the rectangular long-lasting battery. This should give you a good idea of the type of battery you have. This makes it much easier to choose the right device.


In the DND Telecom Center range you will find not only battery testers, but also a wide variety of batteries and battery chargers. Choose from our products and contact us if you have any questions!