Measuring a laptop battery with a multimeter is a simple process. In this article you will learn how to check laptop battery with multimeter.

How to check laptop battery with multimeter

Step 1. Completely charge the laptop’s battery.

Step 2. Power off the computer and carefully remove. Check for volt levels on the battery. This is the figure you’ll use to compare to the reading on the multimeter. Laptops commonly use volt  of 9.6 volts, 10.8 volts, 11.1 volts, 14.4 volts, or 14.8 volts. Some people are rated lower or higher than others.

Step 3. Check for the battery’s connection to the computer’s port. When plugged in, the battery will be in the middle of the side facing the computer. This should be approximately an inch long and look like a series of at least 5 relatively small, identical holes that look similar to the air flow irritating on your laptop, but smaller. The battery’s negative and positive terminals will be on the other side of these openings.

Step 4. Turn on your multimeter and set it to monitor d.c voltage on the 20 V range. Direct current voltage settings are depicted by straight lines near the V, whereas alternating current voltage settings are denoted by wavy lines.

Step 5. One of the multimeter’s prongs should be put into the battery connection’s outer slot. In the connector’s second outermost slot, place the other prong of your multimeter. It makes no difference if the negatives and positives are in chronological sequence. Reversing them will just change the voltage’s sign, not the actual quantity, which is what matters. Ascertain that each prong is in contact with exposed, naked metal.

Step 6. Keep an eye on your multimeter’s reading. A healthy, fully charged battery can detect nearly the same volt on the battery.

Step 7. To compare your battery’s voltage to the full charge figure, try monitoring it after a 60-80 % drain. The voltage of a drained laptop battery will be close to 0 volt. It will still have a few voltages in it. When the battery voltage falls below a particular level, your computer shuts down automatically. Because if the voltage falls below a certain level, the battery will be damaged. The battery’s protective circuitry will then prevent you from using dead batteries.

Frequently asked questions for how to check laptop battery with multimeter

How can you identify if your laptop’s battery is dead?

• Replacement Warning.
• Short Run Time and Shutdowns.
• Failing to Charge. Your laptop battery failing to charge when plugged in could be a sign that it needs replacing.
• Overheating. A little bit of increased heat is normal when the battery is running.

What happens if your laptop refuses to switch on?

A defective power supply, damaged hardware, or a malfunctioning screen could be to blame if your laptop won’t turn on. In many circumstances, you may be able to repair the problem by buying replacement parts or changing the setup of your laptop.

When it comes to laptop batteries, how long should they last?

What is the battery life of a laptop? Laptop batteries typically last between two and four years, or roughly 1,000 charges.

Is it possible to use a laptop without a battery?

There’s no reason why a laptop can’t function without its battery if you consider a few factors. Also, when it’s plugged in, don’t touch the battery connectors. They’re usually well disguised in the case of most laptops, but they can give you a jolt.

Why does the battery on my laptop barely last an hour?

The power-related options on your laptop can determine how long your battery can run the machine. Your battery life consumption rate increases when the screen is set to maximum brightness and the processor is set to full power, and a single charge cycle lasts for a shorter period of time.

Is it okay to put a laptop with a dead battery?

The components of your laptop will not be harmed if you run it with a dead battery.

How can I turn on my laptop without pressing the power button?

You can use an external keyboard for Windows or enable wake-on-LAN for Windows to turn on/off a laptop without using the power button. You may wake up your Mac by entering clamshell mode and using an external keyboard.

How can I use the keyboard to turn on my laptop?

Many laptops can be powered on simply by pressing a key on the keyboard. This option isn’t enabled by default, however if your laptop supports it, you can enable it in the BIOS. Turn your computer off, then restart it to access the BIOS.