FBRS 400\/410\/425\/435 Battery Replacement Service for 400 Series PLB’sACR Life Safety equipment batteries should be replaced according to the manufacturers recommendation and instructions to ensure proper functionality.Battery replacement service includes -Complete physical integrity checkPressure testData transmission testReplacement of seal and o-ringsInstallation of the new battery Disposal of the old battery.*Sold as a ServiceWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.