This product would be ideal for applications requiring a compact and lightweight LiPo battery pack with a 3.7V supply and a capacity of 260mAh.
1x3.7V 260mAh 601730 Lithium Polymer LiPo Battery Rechargeable For mp3 gps dvd
Fitbit Versa 3 / Sense Smart Watch Battery - 3.7V 260mAh LSS352325 FB511 FB512
4PCS Turnigy Nano-Tech 260mAh 1S LiPo Battery Pack 3.7V 35C 70C Losi Connector