How to Test Batteries Without a Tester Method and Drop Test

With all vehicle components, your car battery though small, is the lifeline of your battery. If the battery does not function well, then you will not be able to go anywhere. Besides, your devices that use batteries will also not be able to work well. This is the reason why you should always check your batteries regularly. It is a simple task. The article will take through how to test batteries without using a tester method and drop test. 

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How to test car batteries without a tester?

Testing your car battery with a tester can be considered as most efficient method. But, what can you do when you do not have a tester? Do not worry. There are a few things that you can do to help you figure out how your battery is performing.

1.Conduct a Quick Visual Inspection

You should start with a visual inspection. You have to make sure that the battery is not bulging and it is not leaking. The battery case should be a perfectly square box. You can also look if there is corrosion around the car battery’s terminal and that each cable has been connected securely. If the car battery seems fine, move to the next step. 

2.Test the Battery 

Switch off your car and then switch on the headlights. Then leave the headlights on for 15 minutes.

3.Crank the Engine

It is now time to crank the engine. With the headlights on, crank the engine and see what happens. You will need to help where someone will need to keep an eye on each headlight. You might see your headlight being slightly dim when you start your car: It is normal. But you will need to be on the lookout for these factors. If you see them, your battery might be having a problem. 

The headlight gets much dimmer, or it entirely turns off

The engine takes a while to turn over 

You hear a clicking noise. 

When your car turns on and the headlights are not dimming, then your battery is okay, indicating that the charging system is functioning normally. Though, using this method is not as accurate as using a tester. But you can use it to tell you if the battery is performing efficiently. 

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How do you test if a battery is good without a multimeter?

If you do not have a multimeter, you should not be worried. You can still test your AA, AAA, C, and D alkaline batteries without using a multimeter. 

Use a Voltmeter

If you do not have a multimeter, you can use a voltmeter instead. The voltmeter is effective, just like a multimeter, and it is easy to use and works both on alkaline and rechargeable batteries. What you have to do is: -

Locate the negative and positive terminals of the battery. The negative terminal is indicated as (-), and the positive terminal is marked as (+). 

Turn the knob in the front of the voltmeter to DC. You have to put the voltmeter in the DC setting as batteries use direct current (DC). 

Suppose the voltmeter requires you to pick a level. Then set the meter to 20 volts. (Some voltmeters require you to set the pick level. If not, follow the next step)

Connect the negative and positive terminals of the battery to the voltmeter negative and positive cables. Ensure that the black lead-colored cable is connected to the negative terminal and the red lead-colored terminal is connected to the positive terminal. 

Hold the cables to get the volt readings. The process will take you some time. The readings will tell you if the battery has a charge or not. 

Use Battery Tester

You can also use a battery tester instead of a multimeter. The battery tester will give you simple readings. As compared to the voltmeter, the battery tester is much more straightforward to use. The device has a slide that can move back and forth, accommodating different battery sizes. You just have to open the slide and place your battery into the slot. Ensure that the positive terminal side of the battery touches the slide. Then you can check the volt reading that is present on display on one side of the battery tester. 

Battery Drop Test 

You can also be able to do a drop test on alkaline batteries. It can also be able to test your batteries just like the multimeter. Usually, the alkaline batteries do go bad as they are being used. Zinc oxide is built up inside the battery, making it to be bouncy. What you have to do is:

Hold your battery vertically 5.1-7.6 cm above a flat and hard surface like a metal table or marble countertop. Ensure the positive side faces up for AA, AAA, C, and D batteries. For 9V batteries, you will need to hold it such that both the ones face up and the flat ends are facing down. Avoid a wooden surface as wood absorb the energy making items not bounce well. 

Check for the battery that bounces after dropping it. You will need to look at how the battery behaves when it hits the surface. A fresh battery will just plop down without t a bounce. It will just roll over onto its sides. The old ones will bounce up several times.

Compare the bounce with a battery that you know is dead and needs to be replaced. Remember, a battery bouncing does not mean that it is dead. It means it is losing charge or it is getting old. That is the reason that you need to compare with the old one for a better frame of reference for the battery you are testing. Compare the bounces by dropping them next to each other and comparing the bounces. If dead, it will bounce higher than the fresh one. 

Conclusion

You do not always need a multimeter or a tester to test your batteries. With a Battery tester, voltage meter, and drop test, you can be able to test your batteries. With your battery test, you will be able to understand if you need to replace the batteries. For the rechargeable batteries, you will beware if it needs to be recharged.