simple bluetooth speaker

I design this 2nd bluetooth speaker whuich very easy to makeparts required are 2 inch two speakers52mm square shape two passive radiator one dc jackone power switchone 3s battery indicator as shown in pictureone XY-P15W amplifer3s 12v 18650 battery with 3s bmswiring is to easy to make and plz attach battery indicator direct to the cell not to bms so u will get accurate reading plz share u r make with me in comment section and if any problem then feel free to ask