For the phone, don’t worry too much about charging to a percentage like 80%. Most phones today will stop charging once they reach 100% to avoid overcharging.
It’s best to charge whenever the battery drops below 15-20% rather than letting it deeply discharge. This puts less stress on the battery than running it down.
For your laptop:
Leaving it plugged in while using it heavily is still the best approach, as laptop batteries are designed for that usage pattern.
For the phone, don’t worry too much about charging to a percentage like 80%. Most phones today will stop charging once they reach 100% to avoid overcharging.
It’s best to charge whenever the battery drops below 15-20% rather than letting it deeply discharge. This puts less stress on the battery than running it down.
For your laptop:
Leaving it plugged in while using it heavily is still the best approach, as laptop batteries are designed for that usage pattern.