Once I'd figured out how to remove the original battery from my speaker, I ordered this battery in the hope that it would prevent me from having to buy a whole new PA speaker as mine was no longer holding any charge.
The battery worked straight away as soon as it was attached.
ADVICE:
1) It is recommended that a new lithium battery of this kind is charged for 24 hours when first recieved
2) It is also essential that if the speaker goes some time without use, it must be charged at least every 6 months to maintain the battery's life.
Not charging the battery every couple months when not being used will result in the battery going flat and not charging, this is what happened to my original battery.