This is more a bug report than support request, I have a battery charger. I just lose the clock time when I remove the batteries to recharge them. Roughly 1min. after plugging into a charger I get "Charge Error" on the screen. I've tried 6 different chargers just to verify that's not relevant. 5v 500mA, 5v 850mA, 5v 2.1A, 5.1v 2.6A, 5.1v 5.8A, and 4.9v 37A. Device: Firmware: 180617 Model: RX300 NToolbox Version: 18.05.10.2217 Settings used: USB Max Charging Current: 1.5A USB Max Charging Current: 1.0A USB Max Charging Current: 0.5A RTC Mode: LSL All other settings in Advanced are default. Charging stats: 46C 78% 0.17A Batteries: 3.89 3.92 3.93 3.86 If there is any additional information I can provide of use, let me know.