3400mAh Extended 533-000116, 533-000138 Replacement Battery Compatible with Logitech UE MegaBoom S-00147 Wireless Waterproof/Shockproof Bluetooth Speaker

If your mega boom won't charge check out the YouTube videos on how to open the speaker properly (not like I did) and use this battery. Easy af to do and works like a charm. Not 1 issue with the product. Fyi it's a lil bigger (like less than 1mm) in diameter so when it's installed it's harder to get out than the other one because of friction.

Pros: Exact replacement for the battery that was originally installed. Charged up and worked great Cons: Tools seemed like a nice add but they are pretty lightweight and all broke immediately.

Easy to instal works great

Love this tools are fragile but don't need them

I purchased this battery about 11 months ago and its worked perfectly until about a week ago. My speaker no longer turns on unless it’s plugged in which tells me that it won’t hold a charge anymore. This is exactly what originally happened to it before I replaced the battery with this one. I guess it’s a small price to pay every year to keep your speaker working like it’s supposed to, but it’s a shame that this battery didn’t last longer. Other than the lifespan of the battery, it held a better charge than the original one did. I rarely had to recharge it and I used it quite a bit. Installation was also very quick and easy. Just don’t use the stupid tools they give you. The plastic isn’t strong enough and mine snapped almost immediately. I carefully used a screwdriver instead and it worked perfectly. I’m thinking about repurchasing, however I’ll probably look elsewhere first since this one lasted less than a year. RIP (again) Megaboom.

Battery arrived no charged at all after charging got 100%, I have been using it for 2 days and still shows 60 % charged

The Battery so far is working great, i think it was even a bigger capacity which is nice. The tools that the kit come with are almost useless and i really had to be careful as they were about to snap a few times.

Battery is trash, it barely holds a charge for a couple hours. 100% charge to 0% extremely fast.