FREE SIZING TOOL
LiFePO₄ battery size calculator
Enter your estimated daily energy use, choose system voltage and add reserve. This gives you a practical battery-capacity starting point.
ESTIMATED BATTERY CAPACITY163 Ah≈ 2.08 kWh nominal storage
Round up to a practical battery size and separately verify inverter peak power, BMS current, cable size, fusing and charging capability.
SMART PRODUCT MATCH
ORIGIN 24V 200Ah Plus
5.12 kWh · 25.6V · 200Ah
This product meets the current energy estimate with useful capacity headroom. Always verify BMS current and inverter requirements separately.
5% coupon: BORISKRAJNC
How the estimate works
Battery Ah = Daily Wh × (1 + reserve) ÷ efficiency ÷ nominal battery voltage
This is an energy-capacity estimate, not a complete electrical design. High-power loads can require a larger BMS, inverter, conductors and protection even when the energy calculation looks small.
Important: This calculator provides an estimate only. For exact battery capacity, inverter sizing, cable protection, charging configuration and product compatibility, confirm the final design with the manufacturer or a qualified electrical/solar professional.