Modern laptops typically use lithium-ion batteries, and their charging systems are designed to handle being plugged in most of the time. Unlike older battery technologies, lithium-ion batteries do not have a "memory effect," which means they don't need to be fully discharged before recharging.
In fact, it's generally considered better for lithium-ion batteries to avoid deep discharges whenever possible. The ideal operating range for lithium-ion batteries is usually between 20% and 80% charge. However, most people find it impractical to constantly manage their battery levels within this range.
Keeping your laptop plugged in most of the time and allowing it to charge up to 100% is generally fine for modern laptops. Most laptops are designed to stop charging the battery once it reaches 100% to prevent overcharging.
However, it's still a good idea to use your laptop on battery power occasionally. Doing so allows the battery to go through charge cycles and helps to keep it calibrated. Manufacturers often recommend discharging the battery to around 50% and then recharging it to help maintain its health.
In summary, while it's okay to keep your laptop plugged in most of the time, it's a good idea to use it on battery power occasionally to ensure the battery goes through charge cycles and stays calibrated. Additionally, keeping the battery within the 20-80% charge range when possible can contribute to its long-term health, although it's not strictly necessary for most users.
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