Those days are not the norm. So having a heavier phone 90% of the time so that 10% of the time can be less stressful is not efficient. Just attach a magsafe bat

Those days are not the norm. So having a heavier phone 90% of the time so that 10% of the time can be less stressful is not efficient. Just attach a magsafe battery pack those days and you have full day battery life.