Tell us about yourself!
Agree what Netwizzard said.@Jetley: Dont trash this project please. Thank you.
This works with me :
Depends on type of battery you will fit in the speaker. Proposed 3s LiIon need a suitable charger to avoid overcharging. Otherwise it may cause permanent damage of the battery. Protection boards for 3s Liion packs with integrated charger are available. So 12V charging voltage is ok but you will not reach full charge voltage of 4.35V/cell.
Found it in the *bay, just look for "suit-case handle"