Replacing the main battery via hot swap allows the device to maintain Wi-Fi/WAN connectivity and memory persistence while replacing the depleted battery with a fully charged battery.
The volume level is set at a maximum of 50% while performing a battery hot swap and is set to the original volume when the battery is replaced.
Audio calls made while using a Bluetooth or wired headset are maintained during the battery hot swap.
Push-to-talk applications maintain a network connection during the true battery hot swap, so long as the app remains open.
When the battery is removed, the backup supercapacitor immediately takes over to maintain the system, including Wi-Fi/WAN connectivity (only voice, data, and current state of applications), for 30 seconds. During this time, the user can still interact with the device. The display turns off, and the touchscreen is disabled to conserve power.
To ensure your device can remain functional for the full expected duration during a hot swap, refer to this table:
Connectivity Type
Temperature Range
Supported Call Types
Functional Duration
WAN
0 to 50°C
5G VoNR, 4G VoLTE, LAN VOIP
30 seconds
VOIP / LAN
-10 to 50°C
LAN VOIP
30 seconds
After 30 seconds without a battery, the device enters an emergency (critical) suspension mode, which maintains the memory cache for an additional 30 seconds. This allows the device to resume operation, rather than rebooting, so long as the battery is replaced within this 60-second window. If the battery is not reinstalled in time, memory persistence may be lost, causing the device to reboot when a charged battery is inserted.
Incoming calls received before replacing the battery are suspended and will resume when a fresh battery has been inserted. The performance of these calls depends on temperature and signal strength.
