P12 Battery Charger Display. Intuitive Battery Monitoring. The EV Battery Charger Display provides two options to monitor your battery banks. It can display a graphical representation of voltage for 1 to 3 battery banks with or without connection to a P12 Battery Charger. When connected to a P12 Battery Charger it can display the charger's Summary screen, displaying voltage, current charging stage, and faults from the charger.. Features:. Drop in replacement for traditional rectangular displays. Automatically detects 1-3 battery banks. AC charge indication verifies that power is connected and the battery charger is charging. Plain language fault indication relays if there is a fault with the battery charger. Dip switch selectable screen configuration allows the display to show voltage bar graphs or the P12 Battery Charger summary screen. Displays voltage bar graphs even when AC power is not present. Optional standby mode shuts off screen after 4 hours of inactivity. Automatic ON based