In addition to being used to change between installed algorithms, the IC-Series button has two other features:
1. Turn Off. With the charger on via AC or DC power, press and hold the button for 10 seconds to turn off the charger. The display will show "O-F-F.". If on AC power, the charger will immediately turn back on.
2. Show Software Diagnostic Info. With the charger on via AC or DC power, press and hold the button for 5 seconds to display the software diagnostic information in this sequence:
"S-4.-7.-0": Software version 4.7.0
"C-1-2-3-4": Checksum 1234
"P-3-r-1.-1": Algorithm 3 v1.1