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EnerSys’ $320 Million Ultralife Acquisition: A Defense Power Play With Major Synergy Potential?

EnerSys has announced a definitive agreement to acquire Ultralife Corporation (NASDAQ: ULBI) for $16.00 per share in cash, representing an enterprise value of approximately $320 million and a 166% premium to Ultralife’s unaffected closing share price on October 26, 2026. Announced on October 27, the proposed acquisition represents another step in EnerSys’ strategy to strengthen its position in specialized defense power technologies, particularly drones, counter-drone systems, munitions, and military communications. Ultralife generated $191 million in fiscal 2025 revenue and brings differentiated battery chemistries, established defense relationships, and specialized manufacturing capabilities. EnerSys anticipates $15 million to $20 million in annual run-rate cost synergies within 18 months of closing, alongside adjusted earnings accretion over approximately the same period. With the transaction expected to close in the first quarter of calendar 2027, the strategic rationale centers on expanding EnerSys’ defense capabilities while strengthening its domestic battery manufacturing footprint.