Battery C-Rate Calculator
Is that current gentle or hard work for the battery?
C-rate = current ÷ capacity. 1C on a 100Ah battery is 100A. Everything is worked out in your browser. Nothing is saved or sent anywhere.
1. Battery
2. Current
3. Results
How it was worked out
What this does and doesn't tell you
- Check the battery datasheet for its maximum charge and discharge C-rates.
- Lead-acid batteries give noticeably less capacity at high discharge rates.
- 240V AC mains can kill. In Australia, work on household mains wiring must be carried out by a licensed electrician. Low-voltage DC systems can still deliver very high current.