Viido bluetooth speaker teardown 1 

This VIIDO blue tooth speaker lasted about 1 month before it went wrong: failed to work. It's probably a battery charging issue: using a 5 volt USB mains powered charger, I could only get it up to a maximum of 70% charge and it took about 5 days to achieve that. All of the intelligent stuff is on the PCB. The red flashing LED charge indicator continued flashing for some time but when I wanted to play through it a movie soundtrack from my phone no sound came out and the blue LED, accompanied by a series of notes, indicating start up didn't happen. It is a shame these rather nice sounding and retro styling speakers don't last for a bit longer but sold as a throw away item, the planet having to take the toxic pollution load. I suggest a means of battery substitution using 3 of, AAA rechargeable NiMh cells in series but a hole, to accept a charging socket will need to be drilled into the side of the unit for charging might compromise the airtight compartment and adversely affect the sound.