Battery Level discharge curve, How can I read?

[GunMin]

I found this website.

link text

curve is shown below.

There are app_utils.h information below.

• @brief Function for converting the input voltage (in milli volts) into percentage of 3.0 Volts.
• @details The calculation is based on a linearized version of the battery's discharge

•       curve. 3.0V returns 100% battery level. The limit for power failure is 2.1V and
  

•       is considered to be the lower boundary.
  

•       The discharge curve for CR2032 is non-linear. In this model it is split into
  

•       4 linear sections:
  

•       - Section 1: 3.0V - 2.9V = 100% - 42% (58% drop on 100 mV)
  

•       - Section 2: 2.9V - 2.74V = 42% - 18% (24% drop on 160 mV)
  

•       - Section 3: 2.74V - 2.44V = 18% - 6% (12% drop on 300 mV)
  

•       - Section 4: 2.44V - 2.1V = 6% - 0% (6% drop on 340 mV)
  

•       These numbers are by no means accurate. Temperature and
  

•       load in the actual application is not accounted for!
  

• @param[in] mvolts The voltage in mV
• @return Battery level in percent.

I don't understand the above graph look.

How can I split like a source in the app_utils.h?

What are criteria divides?

And can you analyze that graph?

If you analyze, what should I do?

Or is there another way?

Oh.. I use CR2032. I would like to know how to use, even if the other batteries ago.

[GunMin]

Thank you for reply.

Hi muhkuhns, I don't understand your answer.

Do you know this function? --> battery_level_in_percent()

I see only that graph, I don't know how to divide sections like battery_level_in_percent function.

In this function you are being told, "It has been calculated regardless of the temperature and load."

But I'd like to know what based on can be divided as follows: