Batteries For Laptops - The Good, The Bad, And The Ugly
It does not make a difference if it is dead or actually. It should take max 3-6 hours to charge to full power even if you still have battery left behind. There is a big difference in how long it will end. There is a standby mode when you are not using it which most phones last up to several days 3 spork. But if you use it a lot it will die faster.