What is a battery C rating ？
2024-02-29
A battery's charge & discharge rates are controlled by battery C rates.
C Rating - Time Chart:
30C - 2 mins
20C - 3 mins
10C - 6 mins
5C-12 mins
2C-30 mins
1C - 1 hour
0.5C - 2 hours
0.2C - 5 hours
0.1C - 10 hours
0.05C - 20 hours
The formula:
T= time
Cr = C Rate
T = 1 / Cr (to view in hours)
T = 60 minutess / Cr (to review in minutes)
0.5C Rate Example:
2000mAh battery
2000mAh / 1000 = 2 Ah
0.5C x 2Ah = 1 Amps available
1/ 0.5C = 2 hours
60 / 0.5C = 120 minutes
