I-Birds Enterprises High quality Rechargeable Lithium Ion 18650 Cell 3.7V 1200mAh 3C DIY Charging Power Bank and Camera, Neckfan, F95 Fan, Mic etc (not AAA or AA) Power Supply with Cell Spacer Holder Battery  (Pack of 2)

Capacity: 1200 mAh Capacity Cell with Voltage: 3.7 Volts Cell, Size: Diameter- 18mm x Length- 65mm. (Standard- 18650) Application: Small DRONES, GPS,Mp4 player, Power bank, This li-ion Cell is very convenient to install in your project where 3.7 Volt with high capacity is needed. The standard 18650 1200 mAh 3.7V rechargeable li-ion Cell is a source of power for various portable devices including flashlights.....Suitable for DIY combination of import batteries -With professional battery holder to the traditional general glue, which would brings convenient combination and more firm connection, as well as brings convenient battery maintenance. are the best choice of battery combination -Type 18650 belong to necessary support of high-end battery combination, can withstand high drop, high strength support, easy to heat dissipation, convenient combination, fixed specifications, and free combination -With card slot on edge, any size can merge, match up firmly, with strong, and no need for other device connected by vibration test.