Does battery life decreases when plugged in or overcharged?

Question

My laptop is always plugged in when it is switched off and i many times forget to remove the charger.

Solution

As long as the laptop is relatively new (in the last few years), it is not likely to make a lot of difference. This is especially true of the better makes such as Lenovo as they have smarter power monitors.

In theory, keeping your battery charged to around 80% is the best for it & some power tools try to do this (Lenovo and Dell for example).

If you really don't need the flexibility of being able to grab the laptop and move around, you could remove the battery but you would need to remember to put it back on every few months to keep some charge in it. In all honesty, it is as likely that your laptop will be defunct by the time the battery gets to an unusable point. I've had a couple of laptops where the battery did die but these were old before I even got them and I just used them as "desktops" for a few more years - they were fine for the kids.

Comments

[Code94]

Basically overcharging will harm less as i bought it 1 years ago

[Daniel R Hicks]

@DavidSchwartz - Keeping a battery 100% charged will shorten its life. 60-80% is a better target.

[Julian Knight]

All modern laptops from reputable manufacturers include good battery management features. After all, the batteries are not only expensive components, they are also quite dangerous so they need robust processes.