Has anyone had a problem with batteries dying very quickly?
When I put my first module together I didn't have any jumper wires, so I just turned it on and off a couple times and put it away, but I'm sure the power jumper was removed. The next day I switched it on and it already showed the flashing led for low battery. By the next day the battery was completely dead, but I had put it in new, straight from the package and had only switched the module on a few times without ever playing it. I thought maybe it was just a bad battery, but I put together the rest of my modules today and one was showing low battery within a few hours and I had only played with it for maybe half an hour.
What could be causing this high discharge? I checked all my solder joints carefully and there was nothing wrong, although I had nothing to clean the flux from my first module when I soldered it. Could this really lead to such a high rate of self discharge?
For now I'm removing the batteries when the minimos aren't in use. When I get back to my own workspace I'll probably set them up with their own power supply, but I'm curious what's going on anyway. I hope to get a multimeter this week and make some tests.