Battery Runtime Calculator
Estimate how many hours a battery will run a device based on capacity and load.
Actual runtime depends on battery condition and environment.
Examples
- 5 Ah battery at 1 A load ⇒ 5 h
- 2 Ah battery at 0.5 A load ⇒ 4 h
FAQ
Does it account for efficiency?
No, it assumes 100% efficiency.
What if the load varies?
Use the average current draw.
Can capacity be in mAh?
Convert mAh to Ah before using.
Is the result exact?
Real-world runtime may be lower.
Additional Information
- Result unit: hours