4.2 Back-up Battery
The rechargeable battery on the main board provides backup power to the real time clock when the unit is
disconnected from the main power.
The battery usually comes with 90% charge when new, and it gets charged further during production testing, so it
should be sufficient to power the RTC for approximately half a year, when out of the factory.
If the elapsed time between manufacturing and installation is more than half a year, there is a chance that the
battery gets deeply discharged and the performance is not guaranteed.
If the device needs to be opened for the SAM/SIM/uSD insertion, it is recommended to use this opportunity to
measure the battery voltage, to ensure it is above 2V, replace it otherwise.
Refer to [1] and Figure 5 for details on how to obtain access to the main board back-up battery if replacement is
required.
4.3 1-Wire Assembly (CBL0429)
The 1-wire assembly comes with a connector which could be directly mated with the cable harness without any
crimping required. Refer to section 5 for the wires, connector, and crimps to be used on the cable harness.
Figure 6: 1-Wire Assembly Connection
To Next Page
Loading...