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Power Box

The Power Box is a combination of enclosure, solar charge controller, and connectors which ensure the battery is charged and the instrumentation is powered. Below are some pictures of the new PASSCAL power box (and below that is the old standard PASSCAL power box) . All the power boxes have a 12-15 amp load capacity and a Low Voltage Disconnect (LVD) to prevent damage to the battery. These boxes are designed to work with any nominal 12 volt solar panel and any deep cycle gel-cell lead acid battery.

The new power boxes feature:

  • Water resistance
  • MPPT (Maximum Power Point Tracking)
  • Lower Self Consumption
  • Smaller Size
  • Regulated and Unregulated Outputs
  • Seamless Primary and Secondary Battery Switching
  • -45°to 60°C




The Old Standard PASSCAL Power Box

Power Output: The datalogger and sensor receive power from this connection.
Solar Panel Inputs: The solar panels are connected to one or both of these connectors.
Battery Input: The battery or batteries are plugged into this connector.
LVD Power Output: This is primarily used for telemetry radios or modems. When the battery gets close to depleted, this power output turns off early to save power for the datalogger and sensor.

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