40 80 Battery Rule. This isnt as efficient as you may think. Specifically it refers to not discharging below 40 and not above 80.
Using it this way is the best and most obvious way to extend the longevity. Android Download Accubatter. But if you keep it between that you are not utilizing 40 of battery contradicting your thinking.
Try not to let your phone deplete too much less than 40 which can damage the battery and try not to keep your phone charged entirely more than 80 all the time.
All I can tell you is what a battery manufacturer had posted on their site. If you keep it between 20-80 you may get prolonged battery life latter. Charging only to 80 doesnt work for a lot of people. The reason is because the deeper you discharge it the more stress you are inflicting the battery.
