Amazon.com: 11.1V Battery for Bose SoundLink 3, Soundlink II, SoundTouch 20 Replacement for P/N 330105, 330105A, 330107, 330107A, 359495, 359498, 404600, 404900 : Electronics
061384 (7.4V 2900mAh 21.46Wh) Speaker Battery Replacement for Boses Soundlink Mini Bluetooth Wireless Speaker for 061386 063404 063287 061385 Series - Walmart.com
2200mAh Battery For BOSE SoundTouch 20,Soundlink II,404600,P/N:359498,330107A | eBay