Battery C Rate Online Calculator With Time Calculation

Hello guys, welcome back to my blog. Here you will get a battery C rate online calculator with the battery discharge time calculation. You will also find an explanation of the C rate and formulas to estimate.

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Battery C Rate Online Calculator

A battery’s C Rating is specified by the rate of the period in which it carries to charge or discharge. You can raise or decrease the C Rate and as a result, this will impact the period it takes the battery to discharge or charge. The C Rate discharge or charge time shifts with respect to the rating. 1C is equivalent to 60 minutes, 0.5C to 120 minutes, a 2C rating is equivalent to 30 minutes, and just things you can read from the above table.

C rate for different hours

C Ratings	Time
30 C rate	2 minutes
20 C rate	3 minutes
10 C rate	6 minutes
5 C rate	12 minutes
2 C rate	30 minutes
1 C rate	1 hour
0.5 C rate or C/2	2 hours
0.2 C rate or C/5	5 hours
0.1 C rate or C/10	10 hours
0.05 C rate or C/20	20 hours

The formula is easy,

t = Time
Cr = C Rate
t = 1 / Cr (to view in hours)
t = 60 minutes / Cr (to view in minutes)

30C Rate Example

2300mAh Battery
2300mAh / 1000 = 2.3A
30C x 2.3A = 69A available
60 / 30C = 2 minutes

2C Rate Example

2300mAh Battery
2300mAh / 1000 = 2.3A
2C x 2.3A = 4.6A available
1 / 2C = 0.5 hours
60 / 2C = 30 minutes

0.5C Rate Example

2300mAh Battery
2300mAh / 1000 = 2.3A
0.5C x 2.3A = 1.15A available
1 / 0.5C = 2 hours
60 / 0.5C = 120 minutes

I hope you enjoyed using this tool “Battery C Rate Online Calculator“. Thank you for visiting.

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Chetan Shidling

Automotive | Technical Blogger | Engineer | Content Creator

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