Why isn't my battery turning on?

All manual batteries have an on / off step of clicking the firing button 5-7 times.   The clicks must be in rapid succession, back to back, in order for it to turn on / off.  If the 5 clicks do not all register, 6 or 7 may be necessary.  Once the battery is on, depending on the type of battery, you’ll see either the button or the display light up.