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C Rate Formula:
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C Rating is a measure of the rate at which a battery is discharged relative to its maximum capacity. It represents the discharge current divided by the battery's capacity and helps determine how quickly a battery can be safely discharged.
The calculator uses the C Rating formula:
Where:
Explanation: The C rating indicates how many times the battery's capacity is being discharged per hour. A 1C rating means the battery can provide its rated capacity for one hour.
Details: Understanding C rating is crucial for selecting appropriate batteries for specific applications, preventing battery damage from over-discharge, and optimizing battery performance and lifespan.
Tips: Enter discharge current in Amperes (A) and battery capacity in Ampere-hours (Ah). Both values must be positive numbers greater than zero.
Q1: What does a 2C rating mean?
A: A 2C rating means the battery can be discharged at twice its capacity rating. For example, a 5Ah battery with 2C rating can provide 10A of current.
Q2: How does C rating affect battery life?
A: Higher C rates typically generate more heat and can reduce battery lifespan if used continuously at maximum discharge rates.
Q3: Are C ratings the same for charging and discharging?
A: No, batteries often have different C ratings for charging and discharging. Charge C rates are typically lower than discharge C rates.
Q4: Can I use this calculator for all battery types?
A: Yes, the C rating calculation applies to all battery types (Li-ion, Lead-acid, NiMH, etc.), though maximum safe C rates vary by chemistry.
Q5: What's the difference between C rating and maximum continuous discharge?
A: C rating is a relative measure (multiple of capacity), while maximum continuous discharge is the absolute maximum current a battery can safely provide.