Mini PAM8403 Bluetooth 5.0 Amplifier Board DC5V 3W+3W 2.0 Channel Audio AMP with 18650 Battery Holder For Speaker DIY|Integrated Circuits| - AliExpress
jbl charge 4) the speaker doesn't make any sound not even the little on/off chime. i tried connecting via aux and it still didn't work. also, the battery life indicator is on