Recommended discharge current of coin cell
According to the image your attached, if you want to use 90% of your energy in the cell, you should discharge at 1mA.
If you discharge at greater currents, you risk in reducing efficiency, generating heat and shortening battery life time.
According to your design, you should consider the trade-offs you're willing to get along with.
Also it is important to not discharge too &quot;hard&quot; - see maximum pulse current information.