IEC 62485-2 international safety standard for stationary secondary batteries and battery installations
Design criteria for battery rooms and enclosures, including separation of different battery types and secure placement for maintenance access. Charge Current Parameters iec 624852 pdf
Provides general safety information and basic requirements applicable to all battery types. Regional Equivalents: In Europe, this standard is adopted as EN IEC 62485-2 iec 624852 pdf
While "deep feature" isn't a standard technical term in the document, it most likely refers to the standard's deep discharge protection requirements or its specific focus on stationary application safety Key Safety Features of IEC 62485-2 iec 624852 pdf