Amazon.com: ADAFRUIT INDUSTRIES 1578 Lithium Ion Polymer Battery - 3.7v 500mAh : Health & Household
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4-Pack of ICR 18650 Blue Lithium-Ion Rechargeable Batteries - 3.7V 2600mAh | xUmp
Amazon.com: HXJNLDC DC 3.7V 2600mAh 903759 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
Lithium Ion Polymer Battery - 3.7v 100mAh : ID 1570 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium Ion Polymer Battery - 3.7V 500mAh | TinyCircuits.com
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