Battery died and I recharged it per manual instructions but still nothing works.

Tar Heel Person>>>12 volts is the standard automotive battery in today's vehicle and each of the battery has 6 cells with a voltage of 2.1 volts per cell. A fully charged car battery has 12.6 volts. There is a very big difference when a car battery drops even a small amount of voltage. When a car drops, for instance, from 12.6 to 12.0, there will be 75% difference. Its power drops from 100% to 25%. At 12.4 volts, a car battery is 75% charged while at 12.2 volts its 50% charged. 11.9 volts is only 40% charged.Consider your car battery charged at 12.4 volts or higher and discharged at 12.39 volts or less.