simple bluetooth speaker

I design this 2nd bluetooth speaker whuich very easy to make

parts required are 

1. 2 inch two speakers
2. 52mm square shape two passive radiator 
3. one dc jack
4. one power switch
5. one 3s battery indicator as shown in picture
6. one XY-P15W amplifer

7. 3s 12v 18650 battery with 3s bms

   wiring 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