18650 Battery Pack Builder

Design 18650 Li-ion battery packs. Calculate voltage, capacity, weight, and dimensions for any configuration.

Target Voltage (V)

Target Capacity (Ah)

Cell Capacity (mAh)

Cell Max Discharge (A)

Pack Max Current (A)

BMS Current Margin (%)

N_S = round(V_target/3.7)

N_P = ceiling(Ah_target/Ah_cell)