- The FWT spare battery be able to support 3-hour talking time or 90 hours stand-by time (reference value, the actual time is according to the condition of GSM network) in the case of no external power supply.
- The battery is in packing box, and before using the FWT, user needs to correctly install the battery. During the installation of battery, it needs to be careful of the direction of the socket, try to avoid the reverse installation.
- FWT will charge the battery automatically when using the external power supply adapter. And it will stop automatically when the charging process is completed (the battery will still be charged, when the power switch is off).