The kWh to Ah calculator translates the energy consumed or stored in kilowatt-hours (kWh) into the charge in amp-hours (Ah), based on the voltage of the system. This tool demystifies the process of energy conversion, making it accessible to everyone from electrical engineers to DIY enthusiasts planning their solar setups or battery installations.
Formula of kWh to Ah Calculator
Ah = (kWh x 1000) / V
Here’s what each part of the formula represents:
- Ah: Amp-hours (the unit you are converting to)
- kWh: Kilowatt-hours (the unit you are converting from)
- 1000: Conversion factor to account for the difference between kWh (a unit of energy) and Ah (a unit of charge)
- V: Voltage (in Volts) of the battery or electrical system
Understanding this formula is key to accurately converting kWh to Ah, enabling precise calculations for energy storage and consumption.
Table for General Terms and Common Conversions
To aid in quick reference, below is a table outlining common conversions without the need for calculation. This table assumes standard voltages for various applications, providing the equivalent Ah for a range of kWh values.
| Voltage (V) | 1 kWh to Ah | 2 kWh to Ah | 5 kWh to Ah |
|---|---|---|---|
| 12V | 83.33 Ah | 166.66 Ah | 416.65 Ah |
| 24V | 41.66 Ah | 83.33 Ah | 208.32 Ah |
| 48V | 20.83 Ah | 41.66 Ah | 104.16 Ah |
This table serves as a handy guide for quick conversions, suitable for common scenarios encountered in electrical and renewable energy projects.
Example of kWh to Ah Calculator
Let’s consider a practical example to demonstrate how to use the formula. If you have a solar panel system that has generated 3 kWh of energy today, and you want to store this energy in a 24V battery system, how many Ah of charge will you need?
Using the formula:
Ah = (3 kWh x 1000) / 24V = 125 Ah
This calculation shows that you would need a battery capacity of 125 Ah to store 3 kWh of energy at 24V.
Most Common FAQs
Voltage is crucial because kWh measures energy, while Ah measures charge. Since energy (in kWh) depends on both the charge and the voltage at which it’s delivered, knowing the voltage allows for accurate conversion.
Yes, this conversion is applicable to any battery or electrical system, as long as you know the system’s voltage. It’s particularly useful for designing or analyzing battery-powered systems, renewable energy installations, and electric vehicles.