User's Manual

2.2 Installation & Uninstallation of SIM card, TF card and battery

（1）Rotate the battery cover lock counterclockwise to disassemble the battery cover.

（2）Taking out the battery, it shows two card slots at the compartment bottom. The

upper one is TF card slot and the below one is SIM card slot.

（3）Follow its left instruction to unlock the card slot and install the TF card/SIM card

into the card slot (Please note the card shape), and lock the card slot.

（4）Battery installation: place the battery bottom into the compartment at an angle

and press its top down to engage the connector.

Note: when installing battery, if firstly place the battery top into the compartment and

then press its bottom down, it’s quite possible to cause battery stuck and damaged.

2.3 Battery charging

Since battery hasn’t charged when it has been sent out from factory, it needs to

charge the battery completely before using it for the first time. Charging lasts for four

hours and battery supports over 20-hour continuous operation. The charger has

overcharge protection function.

Note: For optimal performance of the lithium battery, please take note of the following:

⚫ Use the included AC adapter and charger only.

⚫ There is no need to fully discharge the battery before charging. You can charge the

battery before it is discharged.

⚫ Do not charge the battery where the temperature is high(higher than 50℃) or

low(less than 0℃).

⚫ If the handheld would not be used for long, please fully charge the battery at least

once every two weeks. Over discharge of battery would affect the charging

performance.

⚫ It has risk of explosion if battery is replaced by an incorrect type. Please follow the

instructions to deal with the dead batteries.