Amazon.com: HXJNLDC DC 3.7V 1300mAh 503759 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Health & Household
3.7V Polymer Lithium Ion Battery for Rocketry Electronics
Amazon.com: 1200mAh 3.7V Li-Poly Battery with JST-PH cable : Health & Household