li-po 3.7V,2700mAH,724568 PLIB ( polymer lithium ion battery ) Li-ion battery for tablet pc,GPS,mp3,mp4,cell phone,speaker - AliExpress
Amazon.com: EEMB 3.7V 2700mAh 605575 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST Connector Make Sure Device Polarity Matches with Battery Before Purchase!!! : Health & Household