Batteries are the most common way of powering equipment not connected to the electric grid--making this topic of vital interest to nearly every ham.  The care and feeding of batteries is a very popular topic, not just among hams, but nearly everyone these days.

• Which Battery Should You Use in Your Equipment?
  QST April 1999, p. 40-42
  NiCd, NiMH, Alkaline, etc ... How do they differ from one another, and which is best for your application?
• Nickel-Metal-Hydride Batteries in Amateur Radio Applications
  QST September 1994, pp. 38-39
  Meet the newest power source for portable equipment: the NiMH battery
• A Battery-Voltage Indicator 
  QST October 1998, pp. 50-51
  Here's a quick and inexpensive project that allows you to keep tabs on your gel cell.
• Honey, They've Shrunk the Batteries!
  QST December 2001, pp. 31-35
  A rundown on today’s popular batteries, their uses, characteristics and care.

• Car and Deep Cycle Battery FAQ
  Tips, information, references and hyperlinks about car, motorcycle, truck, marine, recreational vehicle starting and deep cycle applications.