Series Parallel Battery Calculator

Battery Configuration Formulas:

\[ V = n_s \times V_{cell} \] \[ Capacity = n_p \times Capacity_{cell} \]

Cell Voltage:

volts

Cell Capacity:

Cells in Series (n_s):

Cells in Parallel (n_p):

Total Voltage:

Total Capacity:

Total Energy:

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1. What is a Series Parallel Battery Calculator?

Definition: This calculator determines the total voltage, capacity, and energy of battery packs configured in series and/or parallel.

Purpose: It helps engineers, hobbyists, and technicians design battery packs for various applications by combining cells in series (for voltage) and parallel (for capacity).

2. How Does the Calculator Work?

The calculator uses these fundamental formulas:

\[ V_{total} = n_s \times V_{cell} \] \[ Capacity_{total} = n_p \times Capacity_{cell} \] \[ Energy_{total} = V_{total} \times Capacity_{total} \]

Where:

\( V_{total} \) — Total pack voltage (volts)
\( Capacity_{total} \) — Total pack capacity (Ah)
\( n_s \) — Number of cells in series
\( n_p \) — Number of cells in parallel
\( V_{cell} \) — Voltage of individual cell (volts)
\( Capacity_{cell} \) — Capacity of individual cell (Ah)

3. Importance of Battery Configuration

Details: Proper battery configuration ensures your application receives the correct voltage and sufficient capacity while maintaining safe operating conditions.

4. Using the Calculator

Tips: Enter the cell specifications (voltage and capacity), then specify how many cells are connected in series and parallel. Typical lithium-ion cells are 3.7V nominal.

5. Frequently Asked Questions (FAQ)

Q1: What happens when batteries are connected in series?
A: Series connections add voltage while maintaining the same capacity (Ah).

Q2: What happens when batteries are connected in parallel?
A: Parallel connections add capacity (Ah) while maintaining the same voltage.

Q3: Can I mix different battery types?
A: Never mix different chemistries, voltages, or capacities in the same pack.

Q4: How do I calculate battery runtime?
A: Divide total capacity (Ah) by your device's current draw (A).

Q5: What's the difference between capacity (Ah) and energy (Wh)?
A: Capacity measures charge, while energy measures work potential (voltage × capacity).