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EnerSys is a world leader in sealed lead acid batteries for industrial applications and reserve power applications; such as UPS backup, home alarm, and telecom. We carry both the Genesis line of EnerSys battery, which are for general purpose battery applications, and DataSafe, which provide a long service life for UPS backups and workstation applications. Shop our selection of EnerSys batteries and compatible replacements by Amstron, CSB, Power-Sonic and more.