This product would be ideal for portable electronics that require battery backup with a voltage of 3.7V.
503450 3.7V 1000mAh 1PCS
1000mah 503450 3.7v 1PCS
⚡ 3.7V 503450 / 523450 1000mAh LiPo Lithium Polymer High Capacity rechargeable B
102050 3.7V 1000mAh 1PCS
822048 3.8V 1000mAh 1PCS