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The Vitel requires only one battery: the larger external 12V battery (17 Amp hr or greater). This is charged by the large solar panels (typically two 20W panels) which are connected via an orange voltage regulator.
If the battery is low:
- Verify the orientation of the solar panel. For maximizing the year-round power, the solar panel should be tilted toward the Equator at an inclination equal to the local latitude + 15 degrees
- Verify that the solar panel is clean. It should be rinsed regularly with clean water
One of two 10 Watt solar panels for Vitel power
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