How to set up limit charge voltage:
Apply Higher voltage on Solar ports, then adjust the POT by Scew driver. That mean can adjust any voltage so that can use on all kinds of battery.
1. Set the up limit voltage;
The difference between MPPT and PWM mode solar controller:
MPPT mode can supply a bigger current more than Solar panel’s short circuit current;
MPPT Has Buck inside to keep definite voltage when charge, PWM mode voltage clamp at battery’s voltage;
MPPT charge current will bigger than rate current, PWM mode less than rated current.
No input reverse;
Add a fake load on output ports will be easier to adjust.
Recommend add an external fuse at the battery;
Do not select solar panels with open circuit voltage bigger than 60v.