3.7V 150mAh 401235 Lithium Polymer Li Po li ion Rechargeable Battery For Mp3 MP4 MP5 GPS mobile bluetooth|lithium polymer|for mp33.7v 150mah - AliExpress
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Lithium Ion Polymer Battery - 3.7v 150mAh : ID 1317 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits