Li-ion Battery 3.7V/2000mAh – Flat - Gamasonic USA
Lithium Ion Polymer Battery - 3.7v 500mAh : ID 1578 : $7.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Batterie 3.7 V 850mAh Thin Lipo LP603048 | Lipolybatteries.com
Amazon.com: FPVERA 3.7V 1200mAh Li-ion Battery 2PCS 3.7Volt Rechargeable Batteries with USB Charger Cable SM-2P Plug for RC Car Drift Monster Truck Off-Road Vehicle Remote Control Car High-Speed Climbing Racing : Toys
Watson Lithium-Ion Battery Pack (3.7V, 1800mAh) for HD B-1801
Battery Li-ion 3.7V 1.8Ah for HTC One ST, One SU, One SC - Vlad
Lithium Ion Battery Pack - 3.7V 4400mAh : ID 354 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: HXJNLDC DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
18650 Protected Button Top battery Panasonic-Orbtronic (FREE Battery Holder) 3400mAh
Amazon.com: BrightTea 3.7V 800mAh Lithium Ion Polymer Battery Rechargeable Battery Li-ion Li-Po : Health & Household