If you suck the last little bit of energy out of your battery and then charge it, next day it will give you a little more… ((I just read that this is not true for all types of batteries… well, it is true for most people…)
But if you suck the energy sparingly, if you are more worried about the battery than about building something with the energy… at the end of the day energy is left in the battery.
You charge it overnight, and next day the battery will show full, but its full is only the 70% you used the day before…
And little by little, your sparing the battery attitude, your stinginess leaves you with hardly any energy to get things done, to think, to dream, to imagine, to be