This may not be practical for road warriors, the overscheduled, or those who suffer from charge anxiety. Unfortunately, it’s also the toughest to follow.
Using it this way is the best and most obvious way to extend the longevity and charge capacity of your laptop.
When it’s time to recharge it, top it off to about 80 percent, if it has decent capacity and you can live with the uncertainty. If you use your laptop away from its charger quite often, try to keep it above 40 percent charge.