I have the following setup for testing. If looking at a typical 2.1mm recharge port, the legs are oriented so that I see three legs, one on the right, one on the bottom, and one on the left (much like what we typically see in wiring examples). I have 2 red wires from the right leg: (+) to battery and (+) to board. One black wire from the bottom leg: (-) to battery. One brown wire from the left leg: (-) to the board. I have speakers wired to my board, and a micro-sD card inserted. I am trying to test two different batteries (both are 18650 from TCSS).
When battery A is soldered to one of the red wires and one to the black wire (obviously color matching the battery), I get a boot sound. I can activate the board, initiate blaster effects, FoC, etc. Inserting the kill key works appropriately. Inserting the charger, I get ... nothing. The charger doesn't turn on to show it is charging. I tried a different charger (same model), same effect.
Switch to battery B. Same setup (same board, same speakers, same wires; simply de-soldering one battery and re-soldering onto another, with kill key inserted while working on the wires). This time, no boot sound, no activation of board. When I insert the charger, it blinks red. Same thing when I try the other charger.
For control purposes, I have a working saber with the same type of battery, where I also used the same wiring scheme. When I try either charger on this saber, it performs as expected: the charger light turns red and is constant until full charge occurs.
I am at a loss. A known working battery exhibits proper behavior with two different chargers. When using those same chargers, battery A powers the board appropriately, but does not seem to be recharging the battery. Battery B doesn't power the board, and exhibits a malfunctioning charging behavior. What am I missing? What can I do to further test, or isolate the problem? I have re-soldered all the wires a couple of times on my test circuit just to make sure. And, this is not my first time completing successful saber builds, but I must admit I have not run across this problem before.
Thank you for taking the time to read this. If there are helpful suggestions, I am all digital ears. These are meant to be builds for Christmas presents, so trying not to dally too long on this. Thank you for the community support. Best ...
Chris
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