Evolution lithium | SCiB Car Audio Batteries in New Zealand

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CAR AUDIO BATTERY CALCULATOR

Battery Calculator / Alternator calculator

System sizing estimate

Evolution Lithium Bank Builder

Enter your system figures to find the smallest current bank that meets the calculated continuous demand with recommendation headroom.

  • 1. Enter exact system values
  • 2. We calculate current demand
  • 3. Get one primary recommendation

This is an estimate based on amplifier RMS power, measured charging voltage, rated alternator output and published cell ratings.

System inputs
W RMS

Use the combined manufacturer-rated RMS output of all amplifiers.

V

Measure at the charging source with the engine running; do not use a guessed setting.

A rated

Enter the rated output. The calculator treats 75% as usable by the audio system.

How is the system used?
System use

This helps choose between compatible chemistries. Continuous current remains the sizing threshold.

Alternator Sizing Calculator
Subwoofer Amplifier RMS (W)
Mids / Highs Amplifier RMS (W)
Vehicle Electrical Load (A)
Battery Bank Capacity (Ah)
Cell Constant Discharge Rate (C)
Charging Voltage (V)
Total RMS
Average Draw
Peak Current
Bank Current Capability
Usable Bank Energy
Demo Runtime
Assumes 80% Class-D efficiency and ~50% music duty cycle. Battery capability calculated using Ah × C. Usable bank energy based on charging voltage × bank capacity. Runtime represents sustained demo time before voltage drop.
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