-Use the battery powered version over the plug in version. When things come in both battery and plug-in form, the battery version usually uses much less total power (even considering the loss in the charger). The most common example is the bedside alarm clock. A plug in alarm clock uses...
Find a sealed gel battery. Gel Batteries: Some people report extremely long lifespans for their gel batteries. WalMart Battery: One IPCRCer got about three or four years out of his WalMart battery. Shorai Lithium Iron Battery: This battery might not be a very good choice. One IPCRCer...