For Symmetra PX 100, it is recommended to replace all four batteries in a row at the same time to ensure optimal runtime. If you are ordering this battery unit for a Symmetra PX 100, you must order battery units in multiples of 2 and you must replace string positions A+B or C+D, as the batteries are connected in pairs. The batteries in each half string must be from the same manufacturer. For Symmetra PX 250/500, it is recommended to replace all six batteries in a row at the same time to ensure optimal runtime. If you are ordering this battery unit for a Symmetra PX 250/500, you must order battery units in multiples of 3 and you must replace the batteries in string position A+B+C or D+E+F, as they are connected in pairs. The batteries in each half string must be from the same manufacturer. Network services help ensure operation continuity even in case of connection breakdown.

APC Symmetra PX UPS