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Original question:

[FAQ] How do I configure the gauge to drive fewer than 5 LEDs?

LED issue on 5th LED

Pietro Vignali
Intellectual 925 points
Other Parts Discussed in Thread: BQ4050

Hello Wyatt,

in a battery BMS we had an issue with the charlieplexing, having the 5th LED rotated that was always lit together with the 4th.

We fixed it by setting the 5th LED in the proper way, but now we have another problem: the 5th LED never turns on when we press the DISP button and the RSOC is > 80%, but if we send a Mac command LED TOGGLE 0x002B instead, the 5th LED turns on correctly

How can you explain this ?
Just for your info the LED Config/DSG thresh 5 is = 80

Please let me know

Thanks
Pietro