Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to
KBT 3.7V 420mAh Li-Polymer Battery:602040 Rechargeable Lithium
Rechargeable Lithium Ion Polymer Battery 452248 3.7V 420mAh Lipo
802030 3.7V 420mAh Rechargeable Lithium Polymer Battery Cell for
Lithium Ion Polymer Battery - 3.7v 100mAh — Little Bird
Adafruit Industries - 258 - Lithium Ion Polymer Battery - 3.7v 1200mAh - RS
Li-Po Rechargeable Batteries 3.7 V for sale
Best Seller Lithium Polymer Battery Overview
1pcs 353040 Mp3 Mp4 Battery 3.7v 420mah Rechargeable Lithium
Uses: smart watches, bluetooth headsets, mobile backup power, MP3, MP4, MP5 players Model: 402050 Size (length * width * height): about 50x20x4mm
COOINS-YDXL 420mAh 3.7V 402050 042050 Lithium Polymer
Adafruit Micro-Lipo Charger for LiPoly Batt with USB Type C Jack : ID 4410 : Adafruit Industries, Unique & fun DIY electronics and kits