Lithium Ion Battery - 3.7V 2000mAh : ID 2011 : $12.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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VM Lithium Batteries 2000mah, Battery Type: Lithium-Ion at Rs 65 in Gurgaon
3.7v 2000mah 102560 Lithium Polymer Rechargeable Battery Accumulator Li Ion Lipo Cell For E-book Power Bank Diy Tablet Pc - Rechargeable Batteries - AliExpress