Solar Battery Sizer

Solar Battery Sizer helps solar energy professionals design battery banks for off-grid and hybrid PV systems per NEC Article 706. # Features - Daily energy consumption (kWh) and days of autonomy - Multiple battery chemistries: LFP, lead-acid AGM, lead-acid flooded, NMC - System voltage selection: 12V, 24V, 48V - Depth of discharge (DoD) per chemistry defaults - Round-trip efficiency factor - Temperature derating factor - Required capacity in kWh and Ah - Number of batteries and total system cost estimation - Usable energy after DoD and efficiency losses # Standards - NEC Article 706 (Energy Storage Systems) - Industry-standard chemistry defaults # For Solar installers, off-grid system designers, electrical contractors, EPC engineers, students preparing for NABCEP exam. # Optional Pro Upgrade - $2.99 one-time in-app purchase Pro unlocks history of saved calculations, dark mode, PDF export, and removes ads. One-time purchase. OPTIONAL PRO UPGRADE - $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: - Unlimited saved calculation history - PDF export of results - Dark theme - Ad-free experience