EEMB Lithium Polymer Battery 3.7V 1100mAh 903042 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

Seems better than the original battery

I am very happy with the purchase. It fits perfectly and works as expected. No trouble installing it. I have it for several months and don’t have any issue. Recommended.

Bought to try to replace old Ipod model A 1136 battery. This battery did not work, for my model ipod it was too big.

Replace a lower capacity battery, 240ma, in my favorite old bluetooth headphones with this one and I am now getting more than 5x the battery life, or about 2.5x when the headphones were new, so I am very happy.

Battery was as described and worked well - The vendor provided Excellent Customer Service as well

The battery has flipped plus and minus wires, requiring to re-do the JST in order to use it with any ESP MCU. I didn't check it initially and it destroyed a SparkFun MCU.

The plug size was too big. I could not use this battery

My Lezyne bicycle lights, circa 2016, would no longer charge. These were a perfect replacement for the headlight and tail light original equipment batteries. My bicycle lights are working again for a fraction of the cost to replace my favorite lights.