I am having a problem with this unit. When a battery is connected, no load is present AND the charge cable is disconnected, the battery is run down to almost 0v. This is terrible for (unprotected) Li-Poly cells, it ruins them and I have a couple of dead cells because of this.
I have checked the UVLO jumper, its open, so one would assume that the under-voltage protection circuit would kick in and stop the battery from draining below 3.6/3.7v? From what I read and heard is that the booster is constantly on regardless of load and this is what drains the battery, BUT shouldn’t the under-voltage protection kick in?
I have had to add a switch to disconnect the battery from the charger on my projects when not in use. What am I missing?