You posted the question under Woods 59377 indoor plug-in timer.
If you have a different timer, please re-post make-and-model and we will find that manual.
Link below is for the Woods 59377 manual
If you have a specific problem with the instructions, answer back and I will help.
http://waterheatertimer.org/pdf/Woods-59377.pdfPlug in timer to charge battery.
When battery is charged, remove timer from plug so programming is easy
Plug timer back in, timer has two plugs for lights
If battery will not charge, then timer is no good.