HTC Butterfly 2 - Manual (Page 18)

Charging the battery
Before you turn on and start using HTC Butterfly 2, it is recommended that you
charge the battery.
§ If the battery has been discharged for several days, you may need to charge
HTC Butterfly 2 for several minutes before powering it on.
§ Use only the adapter and the USB cable that came with HTC Butterfly 2 to charge
the battery. When the battery power is too low, make sure to use the power
adapter to charge, not the USB cable connection with your computer.
1. Insert the small end of the USB cable into the USB connector.
2. Insert the other end of the USB cable into the power adapter.
3. Plug in the power adapter to an electrical outlet to start charging the battery.
§ As a safety precaution, the battery may stop charging to avoid overheating.
§ We recommend you check the temperature of the battery while you're charging.
Also, avoid charging the battery in hot environments.
§ When you're using the Internet and charging the battery, HTC Butterfly 2 may
become warmer. This is normal.
§ To conserve energy, unplug the power adapter from the electrical outlet after you
finish charging.
Switching the power on or off
Switching the power on
Press the POWER button until HTC Butterfly 2 vibrates.
When you turn on HTC Butterfly 2 for the first time, you’ll need to set it up.
18 Unboxing