What is the requirement for testing the battery feature of egress lights?

Any examples are for illustrative purposes only.

The Joint Commission standard EC.02.05.07 EP 1 requires functional testing be performed on battery-powered emergency lighting systems used for exit signs, egress and task lighting, at least monthly for at least 30 seconds in duration.  Visual inspections of other exit signs are also required at least monthly. 

In addition to the monthly 30 second test, the battery-powered emergency lights are tested every 12 months for a minimum duration of 90-minutes. 

In locations that have undergone renovation, or modernization, and in new construction, where deep sedation and general anesthesia are administered the battery-powered lighting are tested annually for a duration not less than 30 minutes.

The test results and completion dates are documented.

Additional Resources:
EC.02.05.07
LS.02.01.20
NFPA 101-2012, 7.9, 7.9.3, 7.70.9,
NFPA 99-2012: 6.3.2.2.11.5