Inverter Battery Life Equation:
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Inverter battery life refers to how long a battery can power an inverter at a given load. It's determined by the battery's capacity (Ah), voltage (V), and the power consumption (W) of the connected devices.
The calculator uses the following equation:
Where:
Explanation: The equation calculates how many hours the battery can supply the required power before needing recharge.
Details: Knowing your battery life helps in sizing your battery bank appropriately, planning backup duration, and preventing unexpected power outages.
Tips: Enter battery capacity in Ah, battery voltage in V, and inverter power in W. All values must be positive numbers.
Q1: What affects actual battery life?
A: Actual life may vary due to battery age, temperature, depth of discharge, and inverter efficiency (typically 85-95%).
Q2: Should I consider battery DoD (Depth of Discharge)?
A: Yes, for lead-acid batteries, don't discharge below 50% for optimal lifespan. Multiply result by 0.5 for conservative estimate.
Q3: What's typical battery voltage for home inverters?
A: Common voltages are 12V, 24V, or 48V systems. Check your battery specifications.
Q4: How can I increase battery life?
A: Use higher capacity batteries, reduce load, or connect batteries in parallel (with proper configuration).
Q5: Does inverter efficiency affect calculation?
A: Yes, divide result by inverter efficiency (e.g., for 90% efficient inverter, multiply by 0.9) for more accurate estimate.