1. What is the Battery Size Calculation?

The battery size calculation determines the required battery capacity (in ampere-hours) to power an inverter air conditioner for a specified runtime based on the AC inverter's wattage and system voltage.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• AC Inverter W — Power consumption of the inverter air conditioner in watts
• Runtime — Desired operating time in hours
• V — System voltage in volts

Explanation: The equation calculates the total energy required (watt-hours) and converts it to battery capacity (ampere-hours) based on the system voltage.

3. Importance of Proper Battery Sizing

Details: Correct battery sizing ensures your inverter air conditioner will operate for the desired duration without over-discharging the battery, which can extend battery life and prevent system failures.

4. Using the Calculator

Tips: Enter the AC inverter wattage (found in the product specifications), desired runtime in hours, and system voltage (typically 12V, 24V, or 48V for most inverter systems). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Should I add a safety margin to the calculated battery size?
A: Yes, it's recommended to add 20-30% to account for inefficiencies, battery aging, and voltage drops.

Q2: What if my air conditioner has a variable power consumption?
A: Use the maximum power consumption value from the specifications for conservative sizing.

Q3: Does this calculation consider battery depth of discharge?
A: No, this gives the usable capacity needed. For lead-acid batteries, you'll need a larger battery to stay within 50% depth of discharge.

Q4: How does temperature affect battery sizing?
A: Cold temperatures reduce battery capacity. In cold climates, you may need to increase battery size by 20-50%.

Q5: Can I use this for lithium batteries?
A: Yes, but lithium batteries can typically be discharged deeper (80-100%) compared to lead-acid, so the actual battery size can be smaller.