Battery Building Tools Plan & Size
Battery Calculator for Car Audio Systems
Plan a lithium battery bank for car audio with cell presets, pack sizing, and accessory recommendations.
1System inputs
Inputs
Start with a preset cell type or switch to expert mode for custom values.
Quick starting points
2Decision checks
Voltage match
12.8-14.4 system target with 4 cells in series.
Alternator support
No alternator input entered. Add it if you want a rough charging support check.
Accessory path
Planner found charger and balancing accessory suggestions for this chemistry.
3Results & accessories
Results
Use this as the starting point for the pack you need to build.