Open circuit voltage (OCV) testing is a technique to assess the health of an energy storage device, such as batteries.

OCV measures the voltage of the DUT (in this case, a battery cell) when the DUT is floating and not connected to any loads. By comparing the voltage measurements taken several days apart, you can determine whether the DUT has an internal short. Internal shorts indicate that a battery is draining energy faster than anticipated.

Set up an OCV test using the following steps: