High quality alkaline AA or NiMH rechargeable batteries
Lifeloc recommends you calibrate your FC10/FC10Plus once a year or if it fails 2 consectutive calibration checks. In addition, check with your program administrator for any additional requirements or guidelines your organization may have.
Calibration check requirements vary depending upon the program guidelines or internal procedures you are testing under.
In a non-DOT program your requirements may vary. Please check with your program administrator.
We recommend you send your FC10/FC10Plus in for a Factory Diagnostic Check every 2 years.
This is typically caused by a battery failure. Replacement of all 4 batteries should fix the problem.