A smart battery display for a 12V 100Ah Lithium Iron Phosphate (LiFePO4) battery. It likely incorporates a Battery Management System (BMS). Here's a breakdown of the information displayed:
STBY: Indicates the battery is in standby mode.
100%: Represents the current state of charge.
VOL 27.9V: Shows the battery voltage.
CUR 0.0A: Displays the current flow, which is zero in standby.
TEMP 30.8°C: Indicates the battery temperature.
Protection: Signifies if any protection mechanisms are active.