4PCS EEMB LIR2450 Rechargeable Battery 3.7V Lithium-ion Coin Button Cell Batteries 120mAh

Great

Just what I needed in a rechargeable battery for car key fob.

I'm using this battery in three Aeotech NanoMote Quad. One battery would not hold a charge and always quickly drained to 1% (not long after charging). I just found that battery leaked and made a huge mess in the NanoMote. Not impressed with the quality at all.

Batteries work as they should.They are shipped from China and take forever to get here.

These are bit different than the original flashlight batteries. But they fit and are holding a charge.

I was given a "Smart" garage door opener that uses a remove battery powered sensor to determine if the garage door is open or closed. The battery life on the sensor seemed pretty short, and since I didn't have a lot of other devices that used this size of battery I never had one on hand. so I ordered these totally expecting the battery life to be worse (as is usually the case with rechargeable) but it's a lot worse. One thing I should mention is that I also live in North Dakota. During the winter it's not uncommon for the temperature in our (insulated) garage to drop to well below freezing. In When it's that cold I was getting less than a month of life out of the sensor. I know that this is really an issue with the sensor, but that's why I say these may work fine, but not for what I wanted.

Used them to replace the old ones in my welding helmet. Worked as expected.

Rechargeable and they work well.Definitely more than I needed but they work well