Operation Manual

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Installation and Use of a Backup Battery (D23)
1. Installing a Battery
You can install the D23 battery onto the SD21 video camera without setting any parameters for power supply, as shown
in the following figure:
2. Checking the Battery Power
You can gently press the Power key to check the power of the backup battery. The LED indicator on the battery blinks
for three seconds in different colors to show the current power.
3. Recharging the Battery
You can connect the standard power unit of the SD21 video camera to the USB recharging interface of the D23 battery
or connect a computer to the USB recharging interface of the D23 battery by using a USB data cable for recharging, as
shown in the following figure. This backup battery has automatic protection against overcharging and short circuit. The
red indicator light keeps flashing when charging the battery and the green indicator light is on when the battery is fully
charged. (The battery can be charged for 500 times.)
Note: 1. Do not remove the backup battery randomly.
2. If the SD21 video camera is not used for a long time, recharge the battery every six months to extend the battery life.
Blinking(green)
upon full power
Power
Blinking(blue)
upon sufficient
power
Blinking(red)
upon insufficient
power
USB data cable
MINI USB
During recharging,the red indicator on the SD21 telecamera
blinks,but the red indicator on the D23 battery does not blink.