18650 Blue Lithium-Ion Rechargeable Battery - 3.7V 2600mAh | xUmp
Lithium Ion Polymer Battery - 3.7V 1500mAh
Amazon.com: AKZYTUE 3.7V 700mAh 603035 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector : Health & Household
Li-Polymer Battery 3.7V 1500mAh
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Lithium Ion Polymer Battery - 3.7V 350mAh : ID 2750 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: EEMB 3.7V Lipo Battery 300mAh 602030 Lithium Polymer ion Battery Rechargeable Lithium ion Polymer Battery with JST Connector Make Sure Device Polarity Matches with Battery Before Purchase!!! : Health & Household