APC AR8136BLK200, SYCF160KH manual 34

Note: When replacing batteries, always replace both batteries A+B or C+D (see illustration above) as they are interconnected in pairs.

For four batteries in a row it is recommended to replace all four at the same time to ensure optimal run-time (Example 1). The batteries can also be replaced in twos, but always A+B (Example 2) or C+D (Example 3).

For two batteries in a row, always replace both batteries at the same time (Example 4).

Four batteries in a row

	Column A	Column B	Column C	Column D
Example 1 –	New	New	New	New
Recommended
Example 2	New	New	Old	Old
– Minimum
requirement
Example 3	Old	Old	New	New
– Minimum
requirement

Two batteries in a row

	Column A	Column B
Example 4	New	New

—Minimum requirement

Note: Allow batteries a 24-hour recharging period after system start-up/battery replacement for battery monitoring data to become fully reliable.

30 Symmetra™ PX48, 96, and 160 kW 400 V 100 kW 208 V Operation 990–3015E-001