MK Battery provides the highest quality and most environmentally responsible battery solutions for specialized deep-cycle and standby power applications. MK Battery was acquired by East Penn Mfg. Co. Inc., Lyon Station, PA, in September 1995, and operates as a wholly-owned subsidiary. As one of the leading manufacturers of VRLA reserve power batteries in North America, East Penn is the ideal solution for the needs of highly technical applications including communications (5G/Wireline/Cable), data centers, switchgear, renewable energy, and other industries where uninterrupted power is essential. Our innovative solutions – based on over 70 years of experience – provide the industry’s most reliable backup power supply to critical business applications.