Parameters
Battery Type
Nominal Capacity C [Ah]
10.0 Ah
Nominal Voltage V_nom [V]
3.60 V
Internal Resistance R_int [mΩ]
50 mΩ
C-rate [C]
1.0 C
0.1C = slow · 1C = standard · 5C = fast
Temperature T [°C]
25 °C
Low T reduces capacity · High T shortens cycle life
Peukert Exponent k
1.08
Li-ion: 1.05–1.1 · Lead-acid: 1.2–1.3
—
Usable Capacity [Ah]
—
Energy Delivered [Wh]
—
Average Voltage [V]
—
Peak Power [W]
—
Est. Efficiency η [%]
Theory
Peukert's equation (capacity reduction at high current):
$$C_p = I^k \cdot t$$Terminal voltage (equivalent circuit model):
$$V_t = OCV(SoC) - I \cdot R_{int}$$OCV is approximated as a polynomial of SoC. Temperature correction: $C_{eff}=C_n\cdot[1+\alpha(T-25)]$, $\alpha\approx0.005\,/°C$
Round-trip efficiency: $\eta_{RT}=\left(\dfrac{V_{dis}}{V_{chg}}\right)\times\dfrac{Q_{dis}}{Q_{chg}}$
Applications: EV & industrial equipment range/run-time design · BMS SoC estimation algorithm validation · UPS and stationary storage capacity sizing. Obtain Peukert exponent k from the battery manufacturer's datasheet.