Amps = C Rating × Capacity
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The C rating to amp calculation converts a battery's C rating and capacity into the maximum continuous discharge current in amps. This is essential for understanding battery performance and safety limits.
The calculator uses the simple formula:
Where:
Explanation: The C rating indicates how many times the battery can discharge its full capacity in one hour. Multiplying by the capacity gives the maximum continuous current in amps.
Details: Accurate current calculation is crucial for selecting appropriate batteries for applications, ensuring safety, and preventing damage to both the battery and connected devices.
Tips: Enter the C rating and capacity in Ah. Both values must be positive numbers. The result shows the maximum continuous discharge current in amps.
Q1: What does C rating mean?
A: The C rating indicates the discharge rate relative to the battery's capacity. A 1C rating means the battery can discharge its full capacity in one hour.
Q2: What is a typical C rating for batteries?
A: C ratings vary by battery type. LiPo batteries often have 20-50C ratings, while lead-acid batteries typically have lower C ratings around 0.2-0.5C.
Q3: Can I use this for pulse discharge rates?
A: This calculator provides continuous discharge current. Pulse discharge rates are typically higher and specified separately by manufacturers.
Q4: How does temperature affect C rating?
A: Lower temperatures generally reduce the effective C rating as battery performance decreases in cold conditions.
Q5: Should I derate the calculated amp value?
A: For safety and longevity, it's often recommended to use 70-80% of the maximum calculated amps in practical applications.