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Connect a Solar Panel to the Hawk

The Hawk is fitted with a 3500mAh LiPo rechargeable battery. This is designed to allow for a 'full season' deployment, to be later recharged and then redeployed for the next season. 

For permanent installations, aggressive sampling/upload rates, or when using power-hungry sensors - a solar panel can be connected to the Hawk. 

Panel Requirements

  • 6V+ (Hawk min operating voltage) 
  • 5W+

Connections

Connect the panel to the external power terminals on the Hawk base-board (Vin + GND)

Notes

Charging Internal Battery

The internal battery is charged at a maximum current of 400mA. This means it will take 8hrs 45 min to fully charge the battery from empty. 

Monitoring Panel Output/Hawk Charging

  • The Voltage output by the panel will simply be the input to the Hawk, which is reported in Analogue 2
  • The battery is fully charged at 4.2V
  • The battery is empty at approximately 3.6-3.7V


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