Battery Accessory Product Technical Specification AirLink FXT Series WA_DEV_FEX20_PTS_003 002 May 26, 2010
Battery Accessory Product Technical Specification Important Notice Due to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost.
Battery Accessory Product Technical Specification Patents Portions of this product may be covered by some or all of the following US patents: 5,515,013 6,191,741 6,653,979 6,968,171 7,287,162 5,629,960 6,199,168 6,697,030 6,985,757 D442,170 5,845,216 6,339,405 6,785,830 7,023,878 D459,303 5,847,553 6,359,591 6,845,249 7,053,843 D599,256 5,878,234 6,400,336 6,847,830 7,106,569 D560,911 5,890,057 6,516,204 6,876,697 7,145,267 5,929,815 6,561,851 6,879,585 7,200,512 6,169,884 6,643,501 6,886,049 7,295,
Battery Accessory Product Technical Specification Document History Version Date Updates 001 November 24, 2009 Creation Updated charging specifications to specify charging method precedence. 002 May 26, 2010 Updated battery accessory photographs. Reformatted in the rebranded SWI template.
Contents 1. GENERAL DESCRIPTION ................................................................................... 8 1.1. Overall Dimensions....................................................................................................... 8 1.2. Battery Cable................................................................................................................ 8 2. USING THE BATTERY ACCESSORY ................................................................. 9 2.1.
List of Figures Figure 1. Fastrack Xtend Battery Accessory ................................................................................ 8 Figure 2. Battery Accessory 6-pin Micro-Fit Connector................................................................. 8 Figure 3. Fastrack Xtend with Battery Accessory Attached ........................................................... 9 Figure 4. Battery Accessory Front Interface ...............................................................................
List of Tables Table 1: Interface Connector Pin Description ............................................................................ 12 Table 2: Battery Accessory Charging Time ............................................................................... 15 Table 3: Charging Voltage Specifications ................................................................................. 16 Table 4: Charger State ............................................................................................
1. General Description The Fastrack Xtend battery accessory consists of a slow charging circuit and a NiMH battery cell. It is designed for use with the Fastrack Xtend to suit M2M system requirements. The 85°C operating temperature fulfills the high power transmission condition required in GPRS class 12 and WCDMA. With the ADC (Analog to Digital Converter) feature of the Fastrack Xtend, the battery accessory status can be easily monitored by AT commands. 1.1.
2. Using the Battery Accessory Refer to the following steps for instructions on how to use the battery accessory with the Fastrack Xtend. Fastrack Xtend Battery Accessory Battery Cable Figure 3. Fastrack Xtend with Battery Accessory Attached 2.1. Battery Accessory Assembly 1. Remove the two screws from the guard plate of the battery accessory. 2. Mount the Fastrack Xtend on the battery accessory by aligning the groove above the battery accessory with the notch beneath the Fastrack Xtend.
Battery Accessory Product Technical Specification Using the Battery Accessory 3. Slide the Fastrack Xtend all the way into the battery accessory. 4. Make sure that the Fastrack Xtend and the battery accessory are properly aligned together.
Battery Accessory Product Technical Specification Using the Battery Accessory 5. Screw the guard plate back into the battery accessory. 6. Connect the Fastrack Xtend and the battery accessory using the battery cable. 7. Connect the battery cable to the 6-wire power cable.
3. Battery Accessory Interface Description 3.1. Front Interface Figure 4. Battery Accessory Front Interface Refer to the following table for the pin description of the interface connector. Table 1: Interface Connector Pin Description Voltage Pin # Signal Name I/O Type Description Min Typical 4.75 5V USB power input External power input (Power coming in from the Fastrack Xtend) 1 Vbus I 2 Vbatt I 4V 3 Bat O 4.2V 4 GND - GND 5 DC-IN I 6 BAT-ID O WA_DEV_FEX20_PTS_003 7.
Battery Accessory Product Technical Specification 3.1.1. Battery Accessory Interface Description Operating Voltage The input operating voltages for DC-IN and USB are as follows: DC-IN 7.5V to 32V USB 5.0V And the output voltage is as follows: Battery 4.2V(typical, at the end of charge) DC-IN is the power supply input of the Fastrack Xtend ranging from 4.75V to 32V. In case the battery accessory is used, the DC-IN voltage range should be restricted to 7.
4. Battery Accessory Charging The battery accessory charges the battery cell in slow charging mode by either DC-IN or USB power source. The charging current is controlled by the battery accessory to avoid DC-IN or USB current surges and protects the internal battery cell against over voltage. The output voltage of the battery accessory ranges from 3Vmin to 4.3Vmax at room temperature. Note: 4.1.
Battery Accessory Product Technical Specification 4.2. Battery Accessory Charging USB Charging Pin 1 of the Micro-fit connector is connected to Vbus, which is used to charge the battery accessory via USB. The USB connector is located on the front interface of the Fastrack Xtend. USB Interface from the Fastrack Xtend Figure 7.
Battery Accessory Product Technical Specification 4.4. Charging Voltage Specification Refer to the following table for the charging voltage specifications for both DC-IN and USB charging. Table 3: Charging Voltage Specifications Charging Current Power Source Input Voltage Maximum Charging Voltage Maximum Continue DC-IN DC 7.5 – 32V 4.9V 128mA 20mA USB DC 5V 4.
5. Battery Cell Information Type of Battery Cell: NiMH Nominal Voltage: 3.
6. AT Commands for the Battery Accessory There are three different methods for monitoring the battery status. The user can: check the presence of DC-IN charging check the presence of USB charging check how much charge is available in the battery accessory 6.1. DC-IN Status GPIO1 is an internal signal of the Fastrack Xtend and is dedicated for DC-IN status monitoring. GPIO1 can be controlled by Fastrack Xtend users using AT Commands.
Battery Accessory Product Technical Specification AT Commands for the Battery Accessory Figure 9. USB Detection by Modem Software After USB connection has been detected and the USB driver has been installed, additional options – Wavecom USB Wireless CPU and an extra COM port are made available in the COM port selection list. Figure 10.
Battery Accessory Product Technical Specification 6.3. AT Commands for the Battery Accessory Battery Level Status ADC1 is an internal signal of the Fastrack Xtend and is dedicated for measuring the battery accessory voltage. From the ADC1value, a specific conversion is necessary to get the battery voltage. The formula of the battery level to ADC1 reading (expressed in mV) is detailed below: Battery voltage (Vbat) = 3.
7. Recommendations and Other Information When used for the first time, or after a long time (more than a month) of storage, 2 to 3 times of charging and discharging cycles are required to optimize the battery performance (capacity). When the battery has not been used for a long period of time, recharge it before use. Disconnect the DC-IN or the USB cable from the Fastrack Xtend modem if the device is not to be used for a long time.
8. References For more details, several reference documents can be consulted. The Sierra Wireless documents referenced herein are provided in the Sierra Wireless documentation package; however, the general reference documents which are not Sierra Wireless owned are not provided in the documentation package.
