9
6.3 Battery
The internal battery is design to be permanently connected in circuit, much like a laptop or cell
phone battery. If the battery is removed, please ensure it is re-fitted correctly paying special
attention to the polarity of the battery and the markings on the PCB.
Failure to do so could
cause irreparable damage.
The battery chemistry is Lithium Iron Phosphate (LiFePo4) which is a long-life, stable and high-
performance battery. It has an expected life span of over 10 years under normal use.
The battery is to be charged only with the built-in charger by connecting a DC power supply of
at least 11V DC. If the “solar panel fitted” option is enabled, at 12V solar panel with an OCV of at
least 20V is required, or a DC power supply operating at 18V DC.
At 15W, the battery will be fully charged in approximately 1 HR.
Batteries may be stored connected for up to 6 months with no loss in battery capacity or
performance. It is recommended to monitor and recharge the batteries at least once every 6
months while the 4GS is not in use. If the battery voltage falls below 1.5V, it may not recover.
If storage for longer than 6 months is required, it is recommended to remove the battery
from the product.
6.4 Connecting the power supply
The 4GS requires an external DC power source and a suitable antenna.
The antenna cable screws onto the SMA connector as shown.
Connect the DC power source to the connector as shown. Do not connect the power supply if
the battery has been removed.
Power requirements are
10 - 28V DC @ 2W - 15W (5W recommended).
If solar is used, ensure the solar panel fitted option is programmed to enable the MPPT
(Maximum Power Point Tracking) feature. This feature monitors the input voltage and adjusts
charge current to maintain the voltage at the maximum point in the IV curve for solar panels.
Содержание 4GS DOORSTATION
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