Built-in protection circuit (PCM) prevents over charging/discharging.
⚡ 3.7V 360821 50mAh LiPo Lithium Polymer High Capacity rechargeable Battery ⚡
3 pcs 3.7V 50mAh LiPo Li Polymer Rechargeable Battery 501015 For Earphone Camrea
10pcs 3.7V 50mAh LiPo Polymer Rechargeable Battery For Earphone Video Pen 501015
Rechargeable Battery 3.7V 90mAh LiPo 1S Buy One Get One Free
Beats SOLO 2 / SOLO 3 Rechargeable Battery - 3.7V 350mAh LiPo 1S AEC353535
3.7V 150mAh LiPo 1S Polymer Rechargeable Battery: GPS, MP3, Speaker - 751525