Honeywell RP4D - Gas Gauge; Change the Battery

34 RP2/RP4 User Guide
Gas Gauge
Press the test button and hold for longer than 5 seconds. The 4 gas gauge lights
appear in green to show the amount of charge left in the battery.
Change the Battery
1. Remove the old battery from the printer and reinstall the new battery in the
printer.
Note: The printer can run for 20 - 120 seconds without a battery and not lose connectivity
or need a restart.
0 - 9% 10 - 39% 40 - 79% 80 - 100%