How do I change the battery type setting on my controller?
To change the battery type setting, press and hold the 'Menu' button for 3 seconds to enter Unit Setting Mode. Use the up or down buttons to select the desired battery type (e.g., AGM, Gel, Flooded, Lithium, Program). Press 'Enter' to confirm your selection.
From the official Upgraded 30A Solar Charge Controller manual, page 13
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