The average lifespan of a laptop battery is between two and four years, depending on the type of battery, how you use your computer, and how often you use it. Generally, a laptop battery can last up to 1000 charge cycles or 2 to 4 years of typical use. If you can use it plugged in more often than before, there's no need to replace the laptop's battery. On average, a laptop battery can last from 2 to 3 hours on a single charge, and up to 7 or 8 (or more) hours.
The total lifespan of a laptop battery is affected by the computer, the battery, average usage, and computer habits. Dell states that you will usually see a significant reduction in performance after 18 to 24 months. The Computer Hope website offers an optimistic period of two to four years, approximately 1000 full uploads. Digital Trends explains that laptop batteries are usually designed to withstand 500 charging cycles.
A single cycle consists of a 0% discharge followed by a recharge of up to 100%. If you have a high-power gaming laptop and you spend most of your time playing games on it, you might be lucky if you only play for 2 to 3 hours before needing to charge it. The quality of the laptop battery will depend on how much you spend on your laptop. If the laptop battery doesn't charge, the charging cable could be damaged, the internal battery could be damaged, or a specific controller could be damaged.
Programs like HWMonitor, Battery Bar, and Battery Care give you detailed information about your laptop battery. In the past, leaving a Windows laptop plugged in was generally considered bad for battery health. To extend the life of your laptop's battery, change the power profile to Energy Saving mode, reduce screen brightness and turn off keyboard backlighting. Additionally, the construction quality, good treatment, brand and how often it has had to withstand high temperatures all influence the life of a laptop battery.Consumer Reports suggests that today's newest lithium-ion batteries should not be allowed to fall below 20% power or exceed 80%.
When you should replace the battery depends largely on how you use it and how often your laptop runs solely on battery power.