Why Are Laptop Batteries So Bad?

Why Are Laptop Batteries So Bad?

There are several reasons why laptop batteries are subpar by today’s standards and usually die within two years of use.

Laptop batteries deteriorate faster than mobile device batteries due to poor charge management. Most smartphones have a built-in safety function that stops charging when the battery reaches 85% capacity, but this safety feature is not available for most laptops to date.

Why are Laptop Batteries Worse than Phone Batteries?

Batteries are the lifeblood of our electronics. They store power and keep our electronics running. Since both laptops and mobile phones are battery-powered devices. It’s no surprise that people are increasingly concerned about the health of their battery—especially as it pertains to their phones or laptop. 

But what if I told you that the battery in your laptop is worse than the battery in your phone? This is how.

  • Phones by default do not fully charge the “100%” battery capacity, even when showing full charge they utilize 80% of capacity which saves a long lifespan.
  • Average laptops do not come with power safety, which means, the battery life will fall short and quickly become unusable with each full charge and full drain cycle.
  • Heat in laptops is another major reason why battery life is decreasing. This is because laptop cooling fans run constantly, slowing down the CPU power and ultimately causing it to lose power.
  • Phones, on the other hand, have no requirement for active cooling because they lack fans and may run well while merely powering the phone’s essential functions during standby.
  • Laptops with desktop replacements are power-hungry with hefty components, and operating on battery power is simply not an option, therefore gaming on battery life reduces battery health.

How to Check Laptop Battery Health?

The Windows built-in application allows you to check the life expectancy of your laptop battery without needing software installation, as it operates just by following a single command and it generates your laptop’s battery health.

  • Open Command Prompt (CMD) and type this command: powercfg /batteryreport
  • Make sure to remember space before slash “/” and don’t include the colon ( : ).
  • It will save a battery report file in HTML format on Windows “C” drive.
  • You can read the battery report on your browser tab or use an HTML viewer.
  • Your laptop battery report will contain such details:
    • CHEMISTRY: Li-Ion
    • DESIGN CAPACITY: 48,944 mWh
    • FULL CHARGE CAPACITY: 33,242 mWh
    • CYCLE COUNT: 100
    • History of system usage on AC and battery
    • And so on.

If your report says less than 70% full charge capacity, I strongly advise you to change your battery, because it will not hold a charge for long and you will need to recharge your laptop in every few hours.

The good news is that you can do it yourself; simply purchase a suitable battery, verify the wattage (higher is preferable), unscrew the laptop, insert the battery and plug the port, and replace the lid.

The main issue is removing the old battery, which may be stuck with glue and requires a plastic tool to pry out from the adhesive’s base.

How Laptop Battery Lose Capacity?

Laptop batteries are notorious for losing their charge capacity over time. And this is nothing new, it is a common problem with most rechargeable Li-Ion batteries.

There are common factors that contribute to a battery’s overall decline in performance:

  • Laptop batteries lose capacity when charged to 100% and discharged to 100%. And every time your laptop battery is charged and drained, it completes a “battery cycle” which deteriorates its capacity.
  • Li-Ion couldn’t last longer than its lifespan, it is because of the chemical interaction that occurs between electrodes and nickel, resulting in loss of capacity over time. Usually, this occurs after 1000 charge cycles.
  • The more times a battery is cycled, the less capacity it will have overall. Therefore, if you want your laptop battery to last as long as possible, try to avoid charging it 100% and not fully discharge your laptop to its bare limits.

Tip: Do not charge 100% of your laptop battery because each complete charge and discharge shortens its life. The ideal approach is to avoid going beyond 85% and recharge before losing a charge below 40%.

Why is Laptop Battery Draining So Fast?

Laptop batteries appear to be depleting faster than before. when there is a battery health issue or when your hardware juiced out of battery for performance.

5 Reasons why laptops drain more battery power:

  1. “High Performance” cost battery power more than “Balance” and “Power Saving” modes.
  2. When the CPU is at Turbos your laptop use more battery power.
  3. When gaming on a dedicated GPU your laptop drains battery power in less than an hour.
  4. If you feel battery drainage after you have installed a program it could be a virus, that uses your laptop resources to spy on or steal data.
  5. One critical reason your laptop battery might be draining quickly is because of the age of the battery.
Adam Payne
Hi, I'm Adam Payne, a tech enthusiast and PC guru. I love evaluating the latest gadgets and sharing my honest reviews of hardware improvements and experiences with modern PCs from handheld to desktops. Whether you're looking to build a new workstation rig or just want some guidance on the best components to choose, I'm here to help. Join me on my journey as I explore the world of technology and all the amazing gadgets it has to offer.