A fully charged employee badge lasts about 200 days if its content changes twice a day. The e-paper display uses power only when its content changes, so a badge whose content rarely changes lasts longer.

**In this article**

- [How do I check the battery level?](#how-do-i-check-the-battery-level)
- [What happens when the battery is empty?](#what-happens-when-the-battery-is-empty)
- [How do I charge a badge?](#how-do-i-charge-a-badge)
- [Related articles](#related-articles)

## How do I check the battery level?

- **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.

## What happens when the battery is empty?

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.

## How do I charge a badge?

Place the badge on any Qi-compatible wireless charger. Joan doesn’t sell chargers yet. We’re testing Qi chargers and will recommend one here.

| Item | Value |
| --- | --- |
| Battery | 3.7 V Li-ion, 155 mAh |
| Charging | Qi wireless charging |
| Battery life, two updates per day | \~200 days |
| Battery life, no updates | \~288 days |

## Related articles

- [Get started with Joan employee badges](/help/employee-badges/get-started-with-employee-badges)
- [Troubleshoot employee badges](/help/employee-badges/troubleshoot-employee-badges)
- [Joan Badge: NFC, Bluetooth and technical prerequisites](/help/visitor-management/joan-badge-nfc-bluetooth-and-technical-prerequisites)

If you need help, contact us through the [support form](https://getjoan.com/help/contact).