A video from Droidborads.com that shows how you can configure you Motorola Droid smart-phone to minimize battery usage.
The main theme of this video is use to the configuration options provided within the phone. It is understood without saying that minimizing battery usage will go a long way in maximizing battery life, time to charge and the overall health of the battery.
The procedures shown in this video may (directly or indirectly) apply to other similar phones from Motorola and in general phones from other manufacturers as well. This short video is definitely worth watching out.