Replace an upgrade battery 2330 mAh on eBay bout $23. make sure it reads bose—I’ve this issue countless times when I sell on eBay I’ve replaced the battery
People bose don’t care go to eBay buy a new battery series iii 2330mAh this number will give u bout 12/14 med volume higher the mAh more time same w/ i-ii the ii u need to do some soldering-online instruction
Bose Bluetooth sound link speaker series I/ii/iii -plunge into charger 30/60 minutes-leave plugged in-hold down all the buttons xcept speaker for thirty seconds until all lights flash 30 seconds release/unplug/repeat/=red or amber should come on -24 hour charge