Should I Let My Laptop Battery Drain. Like most laptops Dell laptops use lithium-ion batteries which can swell due to battery age the number of charge cycles or exposure to high heat. If you take it off AC power say once every week or even once a month leaving the battery in place is.
Batteries should not be left plugged in at 100 for long periods of time. According to this resource Apple does not recommend fully draining discharging the battery. As you use your battery there are some conditions you should avoid as they can lead to faster battery deterioration and aging.
You should try to perform shallow discharges discharge the battery to something like 40-70 before recharging it for example.
I just bought my son a new laptop for his birthday. If you were to discharge your battery to 50 recharge it and then discharge it to 50 again that would count as a single cycle with. Batteries should not be left plugged in at 100 for long periods of time. Try to never let your battery go below 20 except in rare circumstances.
