EnerSys, an American manufacturer of batteries for multiple applications such as motive power, reserve power, aerospace, and defense agreed to acquire NorthStar, the company offers telecom, engine, and uninterruptible power supply batteries from Altor, a private equity fund focused on investing in and developing medium-sized companies for $182.5m. “In line with our previously disclosed strategy to increase sales of premium products we are pleased to announce the acquisition of NorthStar, which will enable EnerSys to dramatically accelerate our production capacity expansion for TPPL batteries,” David M. Shaffer, EnerSys President and Chief Executive Officer.