What do you mean exactly? You need to buy a new battery and replace the one in the speaker with the new one.
Does Somebody also has this Problem?
I changed the battery, everything worked fine. But when I cranked the volume at the maximum, the speakers suddenly shut down and they only work again after inserting the original battery. I bought two batteries from different sources and both had the same problem. Is it just bad luck or does anybody else has this problem?
Don’t be as stupid as me and follow the guide at the step 23. It’s really difficult to pull all the tabs together, better try it to pull out a single one and then go on with the next one.
Everything else worked like the guide said.