This solar charge controller is disappointing because it seems they could just open up the settings and have a more useful product.
I mean, it seems to work as designed, but this particular model, the Li-ion version, has locked all of the settings except a timer, which I have no idea what use is a timer? What would I be setting?
The other versions of this controller let you set the PV and load on and cut-off voltage, and the battery type. The Li-ion version is fixed at lower values, and that sucks!
It may also have a problem because I've not been able to get current from the PV above a trickle, even when there is a 400ma load. One qualifier is that I am using a sealed lead acid battery until my Li-ion packs come in, so maybe the controller is doing what it should? I think that if the battery voltage is 12.6V that the PV is shut off no matter what the load is drawing. I need to play with it more to understand that.
Edit: I played with it more and hooked up a 3s RC li-ion battery pack. There wasn't enough sun to get a reading because the current reading for the PV is 400 ma lower than reality, so it was showing 0.0A.