Unlike other, LCD-based room labeling solutions, JOAN’s electronic paper display features minimal power consumption: only 1% of that of an LCD, resulting in extreme energy savings when using JOAN. Electronic paper’s energy efficiency allows JOAN’s lifetime to be counted in months instead of days on a single battery charge.
You can keep track of JOAN’s battery status in the JOAN Portal, under "Manage" > "Devices."
Here you will see the level of battery power remaining for each of your JOAN devices.
A green battery symbol means that JOAN’s battery is fully charged; yellow that the battery level is below 50%; and red that JOAN is below 25% battery power and will soon need to be charged.
You can also receive an automatic low battery email notification when battery levels drop below 20% if you enter a maintenance email in the JOAN Portal. See how here.
When JOAN’s battery is genuinely drained, the device will inform you by displaying a screen indicating that JOAN needs to be charged and its display will become unresponsive. Simply charge JOAN overnight and your door display will be good to go for quite a long time (weeks if we’re talking JOAN Manager or JOAN Executive devices and months if we’re talking JOAN Board, JOAN Premium or JOAN Classroom).