This standard specifies general requirements and methods of test for secondary batteries used in renewable energy applications, such as solar and wind power systems. It covers performance evaluation, endurance testing, and functional characteristics to ensure the suitability and reliability of batteries for cyclical and float service in these demanding environments.
Specifies general requirements and methods of test for secondary batteries used in standalone and grid-connected renewable energy systems.
Quick Reference Values
Standard test temperature for capacity25 ± 2 °C
Test current tolerance± 1 % of the specified value
Test voltage tolerance± 0.5 % of the specified value
End-of-charge condition (Lead-acid)Stabilized current < 0.01 C5 A
Cycle endurance test duration (PV application)60 cycles
Key Formulas
η_e = (∫ Vd * Id dt) / (∫ Vc * Ic dt) * 100 — Energy efficiency calculation
Capacity (Ah) = Discharge Current (A) x Discharge Time (h)
Practical Notes
This Indian Standard is technically identical to IEC 61427-1:2013, which makes it crucial for manufacturers exporting to or importing from markets that follow IEC standards.
The standard clearly distinguishes between two main test regimes: one for cyclic PV applications (Clause 8.4) and another for charge-discharge float mode (Clause 8.5) typical in hybrid or backup systems.
Pay close attention to the test tolerances in Table 2, as inaccurate test equipment can lead to invalid or non-comparable results.