Huawei ETS2251, User Manual

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HUAWEI
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1 ）
1) Spare battery port
Figure 4-1 Spare battery detachment/installation
1 Make sure the FWT is turned off, and then disconnect the power adapter.
2 Open the spare battery case cover. If it is fixed with the tapping screw, use a
screwdriver to untie the tapping screw and then open the cover.
3 When taking out the spare battery, take down the connection line from the
spare battery port, shown in Figure 4-1, and then take out the spare battery.
4 When installing the new spare battery, insert the line of the spare battery to the
port first (pay much attention to the socket direction) and then put in the spare
battery.
5 Cover the case and fix the tapping screw (optional). Spare battery detachment
and installation are finished.
Note:
y
Make sure that the spare battery has been charged for more than 8
hours before it supplies power for the first time. If the battery has been
left unused for a long period the charging must last for more than five
minutes.
y
While the power adapter is in use, the battery of FWT will be
automatically charged no matter whether the FWT is turned on or off.
When the battery is full, the charging will be automatically stopped.
y
If the FWT is left unused for a long period, you need to take the spare
battery out of the FWT.