What are the safe charging temperature and power supply requirements for the Xstream?
The headset should only be charged at room temperature between 10–25°C (50–77°F). The required power supply specification is Output DC 5V 1000 mA (Limited Power Source - LPS), approved according to local directives for electronic devices. Never leave the headset unattended when charging, and do not use it while it is charging. (Page 6)
From the official Hellberg Xstream Wireless Headset manual, page 6
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