APC Symmetra PX, Infrustruxure Battery Module SYBTU1-PLP - New batteries, clean metal cases - by UPS Battery Center - (Certified Refurbished) APC Symmetra PX, Infrustruxure Battery Module SYBTU1-PLP New batteries, Clean Refurbished Metal Battery Trays Long Service Life Batteries - 1 Year Replacement Warranty included Plug & Play installation - 4x at a time must be replaced Manufactured and sold exclusively by UPSBatteryCenter