Is the Badgy supposed to charge the battery? about badgy HOT 5 CLOSED

Hi @vidax,

The USB should recharge the LIR2450 battery. Please ensure you have the battery inserted in the correct polarity, and the battery has been sufficiently charged (3.7V - 4.2V).

from badgy.

I would also like to know how the board charges the battery? I have been able to get a Badgy to test with from another member here, but charging it via USB with a 2450 in it does not appear to do anything? I.E. LED next to charge controller does not light up, or flash, or anything. Board powers up fine with the battery, and on a multimeter it is showing 4V remaining. But plugging in USB, switch on or off, no LED light status. (Board also powers fine over USB).

from badgy.

Ahh crap....! ...and with that I released some magic smoke from the MCP73831 charge IC! 👎 Was probing around from the USB V+ and touched the VDD of the chip and it went "pooof" (was plugged in to USB at the time). I have some spare MCP73831 circuits, I may try to de-solder and re-apply one.

While poking about looking at the schematic and the PCB layout - I did notice that the LED D4 which is the charge state LED has a current limiting resistor of 2K Ohm. Should this not be more in line with common LED resistors, and the spec sheet, around 200-470Ohm? Or is this high to work with the High-Impedance state of the STAT line as well as Hi and Low?

from badgy.

Sorry to hear that @chunkysteveo :( Yes you can replace it with an off the shelf MCP73831; we chose 2K Ohm simply because we found the LED to be too bright!

from badgy.

Ahh OK, makes sense for the LED. I will try a new MCP73831 to fix this one, and test with a number of LIR2450's I have. Hopefully was just the IC that was dead (well it is now!!! :) )

from badgy.