once you have the battery removed, cut the blue plastic away. The battery for your speaker looks like it is using 6 separate cells to begin with. Check the individual cells and either build your own battery by using the old one as a pattern or try and purchase one that has the approximate same values (10.6V-11.1V and whatever mAh you can get. Get something a bit smaller in physical size. The reason those things come on fire is due to overcharging and expanding, causing the two oposite contacts to touch and expanding and overcharging in a confined area. I build my own batteries for equipment where OEM batteries are no longer available. It is not complicated just a bit cumbersome to do so and as of yet had nothing ever come on fire or blow up :-)
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No reason to throw out a perfectly good speaker because of this.
'''++@twiga65++'''
once you have the battery removed, cut the blue plastic away. The battery for your speaker looks like it is using 6 separate cells to begin with. Check the individual cells and either build your own battery by using the old one as a pattern or try and purchase one that has the approximate same values (10.6V-11.1V and whatever mAh you can get. Get something a bit smaller in physical size. The reason those things come on fire is due to overcharging and expanding, causing the two oposite contacts to touch and expanding and overcharging in a confined area. I build my own batteries for equipment where OEM batteries are no longer available. It is not complicated just a bit cumbersome to do so and as of yet had nothing ever come on fire or blow up :-)