So i have been listening to audiobooks all day and thus need to recharge my battery often (my phone is old). I read on the web that for the battery to reach it's highest lifespan i need to maintain the charge at 50-80%. What would be the best method to reduce wear on my battery: a) Charge every time the charge hits 50% (and charge the phone twice a day) b) Charge it when it hits 10-20% (Only one charge every 1-2 days) ? And if this is the wrong forum for such a question, i'm sorry. I'm new here.