7.4V 2500mAh Li-ion Rechargeable Battery for Speaker/Remote Control Toy/Bluetooth Boom Box/Portable DVD Player/Outdoor Lighting

I bought this to replace an "unreplaceable" battery in an old Jam Bluetooth speaker. I had to cut off the jack and splice on the old one since it was different but otherwise it worked perfectly and my old Bluetooth speaker has a new lease on life. With the old battery it only ran for about 20 minutes on a full charge, now it has gone for more than 6 hours and I haven't charged it yet. This is just a simple 2s 18650 Li-ion pack so it should work fine in anything that uses this setup. So far I am very happy with it! It arrived quickly and was exactly what I expected. I would definitely recommend this battery.

This worked fine as a replacement for circa 2019 motivia installed battery pack with Smith and Noble blinds where battery pack stopped charging, 18650 cells. Slightly faster at 2500mah.

I replaced the battery in a bluetooth speaker, and it works great.

That's item is very good for my speaker I ordered it and I thought it wasn't a good battery but it very good thank alot.

WATCH OUT FOR THE POLARITY! As others have mentioned, mine came with the + and - leads switched from standard in the plug. It wouldn’t charge and only when I inspected did I notice the issue. I released the pins and swapped them, but the plastic got a little mangled. I ended up having to clip the connector off and soldered new leads on. Works fine now, but I guess time will tell if the cells hold up.

The battery on my Lutec London solar lamp failed. I have over 10 of these lamps and this is the first one to fail. The battery replacement on the Lutec site is overpriced and only 2100mAH. This one is more powerful, (it will last longer), and has similar output specs. One major issues. The quick connect on the battery did not work in connecting the lamp head. I had to remove the quick connect from the OEM battery and then wire it to the new battery. Then, everything was perfect. I'm not certain why the quick connect didn't work. But it only took two minutes to wire the OEM connector the the red/black wires. So, it get's four stars for the battery but the connector needs to be replaced for the Lutec lamp. Update: The company service representative did respond to the issue and offered a full refund. I refused the refund as I was able to fix the issue by using the original battery connector. I'm not certain if the problem is the Lutec connector is not universal, or the supplied connector is faulty. Either way, the response from the company for a full refund was appreciated and they do respond to concerns.

Purchased as replacement of the original battery for PRO/fit percussion muscle massager model 8033. Fit and works as it should. BUT, as mentioned in other reviews, the polarity does not match as it should be. ????? And it requires some cutting and soldering job to make it right ✅️.

I have an aqua ez pool vacuum and the battery was starting to not hold a charge, when you think it doesn't get sued every day or week after a few years isn't bad. This battery replaced the original perfectly, popped in and charged up right away, been running great ever since.