A fully charged employee badge lasts about 7 weeks: about 48 days if its content changes twice a day. Most of the battery goes to Bluetooth, which keeps the badge ready to be found and updated, so a badge whose content rarely changes lasts about the same, about 49 days.
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- On the badge: press and hold the button on the back for about 4 seconds. The badge shows its battery percentage and MAC address. Anyone holding the badge can do this.
- In the Joan Workplace mobile app: admins and office managers can see the battery level of badges in Bluetooth range.
The MyJoan web portal doesn’t show battery levels for employee badges. Employee badges only connect when they’re near a phone running the Joan Workplace mobile app, so the portal has no current reading.
An empty badge shows a red battery icon at the bottom centre of the display. The rest of the content stays on screen, because an e-paper display keeps its last image without power. A badge that still shows an employee’s details can therefore be empty, so look for the red icon.
An empty badge also shows as out of range in the app. See Troubleshoot employee badges.
Place the badge on any Qi-compatible wireless charger. A badge charges from empty to full in about 2.5 hours, or from about 20% in about 2 hours. A 10 W or 15 W charger doesn't charge faster than a 5 W one, because the badge always charges at the same rate. You can leave a badge on the charger for days or weeks: charging stops automatically when the battery is full.
To charge many badges at once and for the chargers we recommend, see How to charge Joan ePaper badges.
Item | Value |
|---|---|
Battery | 3.7 V Li-ion, 155 mAh |
Charging | Qi wireless charging |
Charging time, empty to full | ~2.5 hours |
Battery life, no display changes | ~49 days |
Battery life, 2 display changes per day | ~48 days |
Battery life, 5 display changes per day | ~46 days |
Battery life, 10 display changes per day | ~43 days |
Battery life, 20 display changes per day | ~38 days |
For the badge’s other hardware details, see Joan Badge: NFC, Bluetooth and technical prerequisites.
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