Amazon.com: EEMB 3.7V 820mAh 653042 Lipo Battery Rechargeable Lithium ion Polymer Battery PCS with JST Connector Lithium Polymer ion Battery Make Sure Device Polarity Matches with Battery Before Purchase!!! : Health &
What's the Better Battery for Your Portables—Li Ion or Li Poly? | Electronic Design
Lithium polymer battery specification
Lithium Ion Polymer Battery - 3.7v 1200mAh : ID 258 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits