Replacement Battery for Logitech UE MegaBoom Compatible with S-00147 984-001362 084-000845 Ultimate Ears Megaboom 3 Megaboom 3 S-00171 fits Part No Logitech 533-000116, 533-000138,7.4V Li-ion

It was easy to install and charged up just fine.Used my speaker and played for at least ten hours and had 30% left. Charged battery and put the speaker up for another day. The tool broke due to not understanding how the cover is released to access the battery. Managed to get the cover up to change the battery without breaking it. Side note watch videos to get a feel of how to release the cover.

When my UE MegaBoom 3 speaker needed a new battery and the OEM option was nowhere to be found, I turned to this replacement battery. Despite being slightly larger in capacity than the original (3130mAH/22.5Wh 7.2V vs 3400mAh/25.16Wh 7.4V), it fit seamlessly and worked without any issues.After three months of usage, I can confidently say that this replacement battery does the job well. It holds a charge effectively, keeping my speaker running for extended periods without trouble.One crucial tip for users is to perform a calibration when installing the new battery. Charging it to 100%, allowing it to discharge completely, then leaving it plugged in overnight ensures accurate battery percentage detection by the speaker's circuitry.It was super easy to dissamble the speaker just be careful with the gasket, and forget about putting your speaker in the water after this replacement, at least I wont even try to do it.Overall, I'm satisfied with the performance of this replacement battery. It may not be identical to the OEM option, but it gets the job done reliably, keeping my UE MegaBoom up and running for extended listening sessions.

Wouldn't take a change. Light blinked white saying charging for 24 hours, tested and said critical battery again. Charged another 24 hours and still critical battery and won't keep unit on.

So far it has worked great. The battery was easier to change than I thought. It fit perfectly and charged no problem.

Definitely look up a YouTube or I fixit video on how to replace the battery. The speaker is really not made to be taken apart and put back. Just be careful when taking the parts off. Other than that, it's perfect for bringing an older speaker back to life. Just don't think it will still be waterproof afterwards. Mine looks pretty good after. Just a few nicks in the grill.

Direct fit as advertised. Getting the speaker open was difficult but followed a YouTube tutorial and took my time so it worked just fine.

Works

Won't hold charge like it's supposed to anymore.Fully charge last about 30-40 minutes. It did hold a few hours charge playing, but very quickly stopped holding that much juice.