Battery C Rate Calculator
C-rate = |I|/capacity; ideal constant-current duration = 1/C-rate hours. Capacity is positive; current and rate may be zero. No safe-rate recommendation; excludes CC/CV charging, losses, Peukert effects and cutoff behavior.
A QUICK WALKTHROUGH
How to use this tool
- Choose the mode and units.
- Enter the required measured or assumed values.
- Calculate, read every result and save the report.
Scope
C-rate = |I|/capacity; ideal constant-current duration = 1/C-rate hours. Capacity is positive; current and rate may be zero. No safe-rate recommendation; excludes CC/CV charging, losses, Peukert effects and cutoff behavior.
GOOD TO KNOW
Common questions
Does this select or rate equipment?
No. The ideal model cannot determine safe ratings or real equipment behavior.