# Automatic Shutdown on Empty Battery

When the battery charge level dips below the critical threshold (12%), the STRwrench is configured to automatically shutdown. As soon as the critical level is reached, the tool starts emitting an intermittent acoustic notification and turns off after 5 minutes.

When the battery charge level is below 12%, it is not possible to perform tightening. When trying to perform tightenings with this charge level, a notification is displayed reminding of the inability to operate.