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2.5. Solar Panel
The built-in solar panel supports the batteries during periods of clear
sunlight. However, it is not intended to replace the need of battery
charging. To protect the batteries from overcharge, the solar panel is only
active when the following three conditions are fulfilled:
1. Temperature is within 0 – 40 ºC (32 – 104 ºF).
2. Internal battery voltage is below 4.10V.
3. The unit is running. Due to safety reasons the charging must be
monitored continuously. In practice, this means that monitoring
needs to be ON for solar charging.
2.6. External Power Port
The external power port can supply power to the C12 and also charge the
batteries. There are two power options available through this port:
1. Input for a 5V battery eliminator/charger
(Sigicom art. no. 080-01676-0 Power supply).
2. Input for an external 12V battery or solar panel. This input has an
under-voltage protection switch at 11.0V.
a. External battery cable kit (art. no. 080-01681-0).
b. Solar panel solution (art. no. 080-01679-0/1).
Note! C1x cable adapter 12V (art. no. 080-01685-0) is
also required.
Due to safety reasons the charging must be monitored continuously. If the
C12 is powered down, charging will not start automatically when external
power is applied, but it is enough to start the C12 with the B1 button to
start the charging. Monitoring doesn’t need to be started.
The automatic power shut-down function while in monitoring off mode is
disabled while charging and the battery voltage is below 4.10 V.
Charging is indicated by the Check LED flashing with a different pattern,
see section 2.2.
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General