The solar input supports an 11-60V solar panel with an XT-60 connector. 
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For firmware 1.7.8 or earlier: If you use an 11-32V solar panel, the current supports 10A max. If you use a 32-60V solar panel, the current supports 25A max.
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For firmware 2.0.9: If you use an 11-28V solar panel, the current supports 10A max. If you use a 28-60V solar panel, the current supports 27A max.
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For firmware 2.1.1 or later: If you use an 11-15V solar panel, the current supports 10A max. If you use a 15-60V solar panel, the current supports 27A max.
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Anker SOLIX F3800 has two XT-60 ports and each port supports up to 1200W, or 2400W in total.
 If you have any questions, feel free to contact<a style="text-decoration: none;" href="https://support.ankersolix.com/s/owner-home" target="_blank"> us</a> for further assistance.

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