SwitchDoc Labs SolarMAX2 Assembly And Testing Manual page 30

NOTE: The Solar Charger Board (Part D) has protection for reversing the 12V battery and the solar
panels. If you reverse them, the appropriate LED will light up an there will be no damage. But, nothing
will work either. :)
Reverse connection LED indicator: when the battery is reverse connected at the BAT IN or SOLAR IN,
the corresponding orange LED REV BAT or REV SOLAR turns ON, informing the user a reverse
connection error.
If you have hooked up everything correctly you will see a number of LED lights on the Mini Pro Plus (Part H),
and on the Solar Controller (Part D).
Page 28
Version 1.1 September 2021