scope:

This International Standard relates to secondary batteries used in Electrical Energy Storage (EES) applications and provides the associated methods of test for the verification of their endurance, properties and electrical performance in such an application. On-grid applications are characterized by the fact that batteries are connected, via power conversion devices, to a regional or nation- or continent-wide electricity grid and act as instantaneous energy sources and sinks to stabilize the grid's performance when randomly major amounts of electrical energy from renewable energy sources are fed into it. This standard, part 2 of the 61427 series, deals with batteries used in On-grid applications and is essentially battery chemistry neutral i.e. applicable to all secondary battery types. Related power conversion and interface equipment is not covered by this standard.