Built-in protection circuit (PCM) prevents over charging/discharging.
751517 Battery 3.7V 100mAh LiPo Lipo Battery RC Mini Drone Quadcopter Li-ion
⚡ 3.7V 501015 100mAh LiPo Lithium Polymer High Capacity rechargeable Battery ⚡
5pcs 3.7V 100mAh LiPo Polymer Rechargeable Battery For Video Pen Earphone 601417
⚡ 3.7V 501221 100mAh LiPo Lithium Polymer High Capacity Battery ⚡
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3.7V 100mAh LiPo Battery for FQ777-124 Mini Drone / RC Quadcopter