Description There's nothing small about the importance of these batteries. Micro Power Electronics (MPE) makes batteries and battery systems used in defibrillators and other hospital equipment, as well as chargers, docking stations, and external and internal power adaptors. While its products are also used in more pedestrian applications like laptop computers and bar code scanners, MPE's batteries are in many automated external defibrillators (AEDs) in the US. The company also makes ruggedized batteries and chargers used by the military. Its services include design, manufacturing, testing, system integration, and training. MPE was formed in 1985 and is now owned by private equity firm Weston Presidio.