Blue Sea P12 OLED Battery Charger Display

The Blue Sea Systems P12 OLED Battery Charger Display monitors one to three banks and shows P12 charger status, with a knock sensor to wake it.

It works two ways, and the second one is the useful part. Connected to a P12 charger it shows bank voltage, charging current, charge stage and faults in plain language. Without AC power present it still displays battery-voltage bar graphs, so it remains useful at anchor when the charger is doing nothing.

Faults in plain language rather than a blink code is worth noting, since most chargers report problems in a form that needs the manual to decode. The screen configuration is selectable with DIP switches to suit the installation.

An integrated knock sensor wakes the display when motion is detected, and an optional standby mode turns it off after extended inactivity. That combination means the display is not drawing current continuously on a boat left alone, but comes alive when someone steps aboard. Explore more battery charging accessories.

• Shows charger status, or bank voltage with no AC present
• Still useful at anchor with the charger idle
• Faults in plain language, not a blink code
• Knock sensor wakes it, standby saves current