Black & Decker 18V Cordless Drill/Driver "rechargeable lights model" Questions

...model FSL 144 Do I have to discharge the battery completly before recharging? How long do I have to charge it for Newer rechargable batteries aren't like the older ones back from 5-10 years ago. They ...

I have an 18V cordless drill/driver. When I tried to recharged the battery, the battery stayed dead. The red light was on while recharging. The charger stand has red and green LED indicators but only ...