GE Industrial Solutions Off Line Equalization (OLE) - Manual (Page 25)

Off Line Equalization Panel and Converter for GPS4848/GPS4812
Issue 4 January 2008 Off Line Equalization Operation 6 - 1
6 Off Line Equalization Operation
Preparation
Guidelines It is important that the battery string to be equalized be fully charged
prior to performing the equalization operation. To ensure full state of
charge, equalization should not be performed within 48 hours after a
significant discharge event.