Checking the Battery with a Battery Tester? Here’s How to do it the Right Way!

Caution: When testing, be sure to follow the battery manufacturer's precautions and the tester's instructions and read the vehicle (or other systems) documentation before doing any test or removing the battery.

What is a battery tester?

A Battery tester is an electronic device used to determine how much charge is remaining in a battery. It is mostly used to check the battery's condition and flaws or problems with how it works to ensure the device is safe and secure. As batteries are the core of many machines, power tools, and other things, it is essential to record and keep an eye on the vital battery operating parameters.

Battery Tester Uses

Battery testers are used in a wide range of applications and sectors, including:

  • Industrial maintenance
  • Automotive
  • Facility maintenance
  • Electrical
  • Test and measurement
  • DIY and domestic purposes

Types of Battery Testers

There are a variety of battery testers available, each suited to different battery kinds and sizes. The following are some of the types:

  • Electronic Battery Tester: Battery testers, both electronic and digital, are used to determine the remaining capacity of a battery. Depending on the model, this is often displayed as bars or a graph, allowing for easy reading and interpretation of the test findings through a user-friendly interface.
  • Battery Tester for Domestic Use: A domestic or household battery tester is typically employed for rechargeable cylindrical batteries.
  • Universal Battery Tester: Universal battery testers can be used with various battery sizes. However, they are used mainly for cylindrical batteries, such as household battery testers. On the other hand, some voltage meters can test a wide range of battery sizes, from small button cell batteries to bigger industrial and automobile batteries.
  • Tester for Car Batteries: Lead-acid batteries should be tested with car battery testers. These testers are connected to vehicle batteries and show the battery's health, condition, and voltage output.
  • Battery Testers for Small Batteries: Battery testers for tiny batteries can usually be used with 12V batteries, alkaline batteries, and various other types, depending on the model. For residential use, a digital AA battery tester is suitable, and these devices are usually compatible with a variety of tiny batteries.

How does a Battery Tester Work?

Battery testers function by providing a load to the battery and monitoring its voltage and current. The procedure is simple: the current is released and measured when the conductive parts of the tester hit both the positive and negative contacts on the battery.

Since battery testers measure current, they are likely to be accurate on certain types of batteries compared to others. An alkaline battery's current, for example, will normally decline at a constant rate, resulting in more reliable findings when measured. On the other hand, Li-ion batteries face higher drops at specific charge levels. As a result, the findings are more likely to be inaccurate with these batteries due to their less precise charge levels.

Battery Testers: How to Use Them

  • It is always a good idea to consult your model's instruction manual or the manufacturer's advice. Before testing a battery, make sure the tester is functional and compatible with the battery type you'll be testing.
  • Using a voltmeter is not that much difficult as it might seem. First, insert the battery into the tester, ensuring that the positive and negative contacts on both the battery and the tester are in the correct positions. Then, before you take the reading, double-check that the battery is securely fastened.
  • You should preserve and maintain your battery tester as you would any other instrument or gadget to help extend its useful life and reduce the chance of harm. Battery testers should be kept in a cold, dry place. They are relatively low-maintenance pieces of equipment, typically requiring only a simple wipe down to keep the screen clean and dust-free. Remember not to use a moist cloth to clean the gadget because it may cause damage. Instead, clean your devices with a clean towel or, better yet, specialized electronics cleaning wipes.

How to take the reading of Voltmeter

  • Once the battery is positioned correctly, you should get a voltage measurement using the Voltmeter.
  • Depending on the model you're using, the test's output may take on a variety of distinct formats. Bars and Graph readings are user-friendly formats.
  • Generally, if the battery is heading toward the scale's higher-end, they are likely to be in good condition and have a significant residual capacity. Batteries with results in the middle of the scale may still be suitable for use in specific low-power applications, although careful monitoring will be necessary. Batteries with an indicator pointing toward the lower end of the scale, maybe in the red part, have a low remaining capacity and should be replaced or recharged, depending on the type of battery.

How about buying these Battery Testers?

Fluke BAT 250 - 250 V Battery Tester: It has a scale to show how well the cells are working and can measure 9V and AA and AAA. Fluke's 250 V Battery Tester can be used for Automotive Testing and needs a voltage of 250V to work. In addition, it doesn't need batteries like other devices do, can withstand rough use, and falls.

Amprobe BAT 250 - Battery Tester: This battery tester has an ergonomic design and a V-shaped Cradle that keeps the batteries in place. This checks both standard and rechargeable batteries to see if they work well or not. The Amprobe battery tester has a large and upright screen that is easy to read.

Kusam Meco High-Performance Battery Quality Analyzer: The Kusam High-Performance Battery Quality Analyzer determines the capacity of a battery by transferring electricity to determine resistance and capacity. The Performance Battery Quality Analyzer has an operating period of 6 hours.

As batteries are an essential part of many products, every company or researcher needs to have battery test equipment. It can measure things like voltage, capacity, temperature, the density of electrolyte, and more with a battery voltage recorder and a battery load unit. Therefore, choosing an appropriate battery tester is important.