🔋 Battery Backup Calculator ⏱️

Estimate how long your inverter battery can power your appliances.

*If you have multiple batteries in parallel, add their Ah values. E.g., two 150Ah batteries in parallel = 300Ah.
*Commonly 12V, 24V, or 48V. If batteries are in series, add their voltages. E.g., two 12V batteries in series = 24V.
*Sum of wattage of all appliances you want to run (e.g., 75W Fan + 20W LED Light = 95W).
*Typical efficiency is 75-90%.
*Lead-Acid: 50% recommended. LiFePO4: 80-90% possible.
Result will appear here...

* **Disclaimer:** This tool provides an **estimation**. Actual backup time can vary due to:
- Battery age and health - Ambient temperature - Fluctuations in load - Type of battery (Lead-Acid, Lithium-ion etc.) - Quality of inverter and wiring
* For critical applications, always consult with a qualified electrician or solar/inverter system professional.