I'm using this battery charger circuit for a project in an enclosure:
The board has a red LED that lights up when the battery is charging, and a blue LED that lights up when it is fully charged. Because the board is in an enclosure, these LEDs are not visible and I want to wire my own that will light up when the battery is charging and turn off when it is fully charged/not charging.
If I wire it to the IN+/- terminals, the LED stays on when the battery is fully charged, not just during charging. If I wire it to the BAT+/- terminals, the LED lights up whenever current is drawn from the battery, but I only want it on when current is going into the battery. I've thought of trying to solder the LED in parallel with the tiny red one on board, but I feel like there should be a better way to do this that I'm not thinking of. Is there one?
EDIT: I just realized that I could have the LED do the opposite behavior as well, to stay off during charging and turn on when the battery is fully charged (I think this might be more common). The wiring issue would still exist, but I wonder which behavior would be preferable?
The board has a red LED that lights up when the battery is charging, and a blue LED that lights up when it is fully charged. Because the board is in an enclosure, these LEDs are not visible and I want to wire my own that will light up when the battery is charging and turn off when it is fully charged/not charging.
If I wire it to the IN+/- terminals, the LED stays on when the battery is fully charged, not just during charging. If I wire it to the BAT+/- terminals, the LED lights up whenever current is drawn from the battery, but I only want it on when current is going into the battery. I've thought of trying to solder the LED in parallel with the tiny red one on board, but I feel like there should be a better way to do this that I'm not thinking of. Is there one?
EDIT: I just realized that I could have the LED do the opposite behavior as well, to stay off during charging and turn on when the battery is fully charged (I think this might be more common). The wiring issue would still exist, but I wonder which behavior would be preferable?
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