Annotations are based solely on our experience with consumers and technicians throughout the world and should not, in any way, be construed as opinions of Rayovac Corporation or their employees. Batteries, required to power your computer's real time clock and to maintain setup or configuration data files during power failure or normal off periods, need to be replaced every few years. Losing the configuration file memory from a failed battery causes project delays, lost work time and major inconveniences. These problems can be avoided through preventative maintenance. You should replace the computer clock battery on a routine basis on your next service call before the problems start.
Batteries also vary by connector type, wiring, and voltage.
And, their service life as well as function can be impacted by the electronic components located on the computer's circuit board. In addition, PC manufacturers may specify different types of clock batteries for different computer models within their product line. Therefore, it is important to be able to identify which batteries are used in specific PC's. The drawing below depicts various configurations for headers found on system boards. Drawing A shows a four pin header with all pins in place.