Sometimes we need to know power consumption to calculate how much battery capacity can be used and to know under what kind of situation consume power most. 

we can use DSB75 with module as a golden sample to compare with customer's device. 

As a result, to measrue current with DSB75 should be addressed. 

Here is the document to tell you how to measure current using DSB75 with module (we use ELS31-J as an example)

How to measure current using DSB75.pptx