Estimate Overall Equivalent Lithium Load Of A Battery
It does not make a difference if it is dead or never ever. It should take max 3-6 hours to charge to full power even if you've have battery left behind. There is a big difference in how long it will end. There is a standby mode when you aren't using it which most phones last up to several days 3 utmost. But if you use it a lot the battery will die