Problems and solutions pertaining to the use of lead-acid batteries used in power supplies for electronic equipment

Lead-acid batteries used in the power supplied for communication and information-processing equipment are considered. In the event of commercial power failures, such batteries are useful in providing a stable supply of power to the load, and providing for uninterruptible power. Recently valve regulated sealed lead-acid batteries have come to be used often in such applications, but there are some attendant difficulties to be considered. The authors present their views, based upon experimental data about how to deal with the design of battery boxes to give the batteries long life, charging voltage control, and temperature rises due to ripple currents. Additionally, when many batteries are connected in parallel, the individual batteries in each string tend to develop imbalances in characteristics and service life, and how these should be dealt with is examined.<>