Hi,
I am using the above mentioned charger. Attached is the schematic. We built 25 boards and all of them have this audible noise when the current is being discharged from the battery.
Although when I connect charger cable to charge the battery the noise stops.
Based on some other forum I have tried to include 0.1uF cap at pin IN,OUT and BAT but it doesn't solve the issue.
Please let me know what needs to be done.
A