Battery Charge/Discharge C-Rate
Battery C-Rate Calculator
1Battery Parameters

Recommended charge/discharge C-rate: 0.2~0.5C / 1C

Ah
2Operating Parameters
A

Charge current output from the MPPT/PWM controller

W
3Calculation Results
Battery Allowable C-Rate Reference
TypeCharge C-RateMax Discharge
Lead-Acid (AGM)0.1~0.2C0.25C
Gel Lead-Acid0.1~0.2C0.3C
LiFePO40.2~0.5C1C
NMC0.3~0.5C1~2C

📋 Reference Standards

IEC 61427-1Secondary Batteries – PV
IEC 62620Li-ion Cells
IEEE 485Lead-Acid Sizing