I want to create a battery backup for my radios. Initially I'm thinking of using an Epic PWRgate and a LiFePo4 battery, so the battery is charged by the same power supply that's running the radios. The LiFePo4 batteries require a charge voltage of 14.4v. Radio gear all appears to require 13.8v±15% (11.7-15.8v), so no problem with raising the voltage there. My current power supply isn't adjustable though, and the few I've found that are have a big knob on the front which seems too easy to bump and end up damaging something.
Is there a better way to go about this? Or another precaution I can take to prevent an incorrect voltage from starting a fire?