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Series / parallel calculator

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Resistors

Example Series (3 resistor(s)): Rtotal = 1.55 kΩ

Example Parallel (3 resistor(s)): Rtotal = 116.6 Ω

Series: $R_{\mathrm{total}}=R_1+R_2+\dots$

Parallel: $\frac{1}{R_{\mathrm{total}}}=\frac{1}{R_1}+\frac{1}{R_2}+\dots$

Batteries

Example Pack (4S1P): 6 V — 2 Ah — 12 Wh

Series: $V_{\mathrm{pack}}=N_s\times V_{\mathrm{cell}}$ — the capacity is unchanged.

Parallel: $Q_{\mathrm{pack}}=N_p\times Q_{\mathrm{cell}}$ — the voltage is unchanged.

The stored energy is the product of the two: $E=V_{\mathrm{pack}}\times Q_{\mathrm{pack}}$ — in volts and amp-hours, which is the Wh in the result; a capacity entered in mAh has to be divided by 1000 first.