BBM Battery supplies the replacement CS-BSE107SL Battery for the Bose Bluetooth SoundTouch 20 Speaker. This 11.1V/2.2AH Li-Ion Battery is made specifically to cross to your Bose Battery part number 404600 more - see below for a full list.
Dimension: 178.60 x 31.26 x 42.12mm
Fit Bose Model:
SoundTouch 20, 404600
Bose Battery Part Number:
330105, 330105A, 330107, 330107A, 359495, 359498 , 404600, 404900
Bin CS-1013