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NRS is the national distributor for EnerSys Inc., for the rail and rail transit industries. NRS/EnerSys offers a full line of monbloc and unitized batteries for locomotive starting/engine starting. The four-cell monoblocs range in capacities from 280-450AH and feature breakage-resistant, high-density polypropylene cases. The unitized line features a low-maintenance design with capacities of 510, 530, 650, and 725AH. Also, EnerSys is the only U.S. battery manufacturer that offers both flatplate and square tubular designs, the company says. NRS/EnerSys has a nationwide service network to repair, recondition and maintain all types and brands of locomotive starting batteries. Service centers provide recycling and disposal of scrap/spent lead-acid batteries.