Amp-hours to Watt-hours Converter
Convert a battery's capacity in amp-hours to energy in watt-hours using its voltage.
Actual usable energy depends on discharge characteristics.
Examples
- 10 Ah at 12 V ⇒ 120 Wh
- 5 Ah at 24 V ⇒ 120 Wh
- 2 Ah at 3.7 V ⇒ 7.4 Wh
FAQ
Does this assume constant voltage?
Yes, voltage is treated as constant for the calculation.
Can I input mAh?
Divide mAh by 1000 to convert to Ah first.
Is efficiency considered?
No, this shows theoretical energy only.
Additional Information
- Watt-hours express energy, allowing comparison between batteries operating at different voltages.
- Capacity ratings assume ideal conditions; actual deliverable energy is often lower.
- Match the battery's voltage to your device to prevent damage or reduced performance.