The headset is powered by a rechargeable lithium ion battery pack.
A fully depleted headset battery will be fully recharged in less than 6 hours. The
headset user will hear the following warnings when the battery charge is low.
Battery Condition Audio Warning
When battery voltage is low "Headset battery is getting low."
When battery voltage is critically low and about
to turn off
“Headset battery is getting low. Change headset
battery now.”
Charging SRX2/SRX3 Wireless Headset Batteries
NOTE
The SRX3 and SRX2 headsets use the same battery.
WARNING
Once an SRX3 or SRX2 battery is placed on a port in the charger, it must
remain in the charger for a minimum of five seconds. This allows the
charger sufficient time to analyze the state of the battery. Removing the
battery during this five second interval may cause the LED indicator on the
charger to display an incorrect battery status.
TIP
15 SRX3 User Guide - Preliminary