An Ah to kWh calculator provides a straightforward way to convert the charge stored in a battery (expressed in Amp-hours) to the energy that can be drawn from it (expressed in Kilowatt-hours). This conversion is crucial for understanding how long a battery can power a device or system before needing a recharge. By integrating the voltage of the system into the calculation, the calculator reflects the real energy potential available in a practical scenario.
Formula of Ah to kWh Calculator
The formula for converting Ah to kWh is elegantly simple yet profoundly useful in a wide range of applications:
kWh = (Ah x V) / 1000
Here’s a breakdown of the formula components:
- kWh: Kilowatt hours, the unit of energy you are converting to.
- Ah: Amp hours, the unit of charge you are converting from.
- V: Voltage in volts of the system.
This formula stands as a cornerstone for anyone looking to accurately gauge energy storage and consumption in electrical systems.
Conversion Table for Common Terms
To aid in understanding and applying the above formula without the need for calculations every time, here is a table of common conversions based on standard voltages found in many batteries and systems:
| Battery Voltage (V) | Amp Hours (Ah) | Kilowatt Hours (kWh) |
|---|---|---|
| 12 | 100 | 1.2 |
| 24 | 100 | 2.4 |
| 48 | 100 | 4.8 |
| 120 | 100 | 12 |
This table provides a quick reference to estimate the energy content of a battery based on its capacity and system voltage.
Example of Ah to kWh Calculator
To illustrate how this conversion works in a real-world scenario, consider a 24V battery system with a capacity of 200 Ah. Using the formula:
kWh = (200 Ah x 24 V) / 1000 = 4.8 kWh
This calculation tells us that the battery can supply 4.8 kWh of energy, which is equivalent to running a device that consumes 1 kW for approximately 4.8 hours.
Most Common FAQs
Yes, you can reverse the calculation by rearranging the formula: Ah = (kWh x 1000) / V. This allows you to determine the required battery capacity in Ah for a given energy need in kWh and system voltage.
Sum the Ah capacity of all the batteries in the bank (if they are connected in parallel) and use the system’s voltage in the formula. If batteries are connected in series, add up the voltage and use the individual battery’s Ah capacity.
Voltage is crucial because it determines the potential difference that drives the electric current. The same amount of Ah will yield different amounts of energy (kWh) at different voltages. Highlighting the importance of including voltage in the conversion to accurately reflect energy content.