With the growing number of lithium-ion batteries due to their increasing demand in our portable electronic appliances, rapid testing of these batteries is becoming a necessity for regular users or people related to electrical backgrounds. Nowadays people keep these testing kits as a tool so that they can test their batteries in use for measuring their health and also for testing new batteries they buy.
These testers are mainly used for testing the internal resistance of a battery. Various test modes are now supported by these testing kits like CV (Constant Voltage), CC (Constant Current), and CP (Constant Power). These tests are mainly used for testing the battery life cycle that assures cell reliability.
How Do You Use Lithium-Ion Battery Tester?
For testing a lithium-ion battery the first thing you need to do is to check the voltage of the battery pack. It is done with the help of a battery tester, so let’s start.
The battery tester has connecters, connect them with the battery pack and the LCD screen on the battery tester will show you the voltage of the individual cells inside the battery. If it shows that all the cells are fully charged then it means that the battery pack is fine and will meet your needs, but if it shows one or more cells with low voltage than the others then this pack might have a problem. This is the first stage of the testing.
Moving into the second stage of the testing, in this stage, we will be measuring the capacity and the internal resistance of the battery, or in other words the health of the battery. The first thing to do is to take the cover off the battery (if any) that will reveal the module connections that we need. Now we will need dual power Lab-08 stations as the battery is 16 cells that we are testing and these stations will check 8-cells each.
These stations have three cables with two of the balanced leads having one big connector and one with the small connector. Then they also have high power connections or the alligator clip. First, you connect the balanced leads, in the front, you connect the big connector and at the back the smaller one or vice versa (depending on the connectors). The alligator clip goes in the middle one making sure it is connected strongly. Then connect the two cables of the alligator clip with the positive and negative terminals of the battery and join them with a screw carefully and do not overtighten them. Now turn on the stations.
To set these units first of all you need to charge the battery with charge rate setup at 20 amps and the other one at 40 amps. Now set it to charge only. What we are doing here is cycling the battery once or at least once so we can get a reading on how much energy you can store in them, you have to do that by discharging them to the bottom and charging them to the top then again discharging them to the bottom (This is one complete charge cycle–discharge cycle). This way you can measure the amount of energy that came out and that is what these batteries are going to be able to hold.
?If they have been sitting there on a shelf unused for a long time the usually after the first three or four cycles they will gain capacity but we rate the batteries on whatever the result is after the first cycle and whatever goes up after that is a little bit of a cushion for you guys but it is not rated on its behalf.
Well during this procedure, a lot of energy is wasted i.e. 5KWH of energy per module that we have to move and so that’s a lot of energy and we can’t just waste it so what we are doing is that we are using that energy to charge other battery packs, making it an energy reusing testing procedure, because in this procedure there is no loss of energy during the testing process.? ?
The testing will take up to 2 hours, so you should set up the testing process and walk away and let the charger do its thing but at the end of the hour, you will have to come and check how much amp-hour the result is. For example, It is 40 Amp Hours, so what does it mean? How much energy can it hold? You multiply it by each cell voltage that is 3.7V and you will get 148 Watt-Hours per cell. Then you multiply by the number of cells, in our case there are 16 cells so 16X148 = 2.368KWH. So, this module can store 2.3KWH of energy.
Can You Test A Lithium-Ion Battery Without A Tester?
Yes, you can test a lithium-ion battery without a tester but it will be without ant instrument. And for verifying the results you can use a multimeter.
Take two battery cells one dead and one new. First, drop the dead battery from 3-4cm above the ground. You will observe that the battery cell bounces several times before standing still.
Now repeat the same procedure with the new battery cell, it won’t bounce at all and will standstill on the ground. This proves that the dead battery cell is empty and the new one is full.
Now for surety check it with a multimeter and verify the results.
What Are The Advantages Of Lithium-Ion Battery Tester?
There are numerous advantages of digital battery testing over traditional methods that improve efficiency and effectiveness in auto repair, fleet service, and vehicle dealership environments. The following are the three main and big advantages of a lithium-ion battery tester.
1.It can effectively assess discharged batteries.
2.It can properly assess the many battery types found in today’s modern world.
The many additional functions that are offered by digital or electronic battery testers as compared to traditional load testers or other manual methods.
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