Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh : ID

Adafruit LiIon or LiPoly Charger BFF Add-On for QT Py : ID 5397 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Teensy 3.x Feather Adapter

Adafruit Feather 32u4 Bluefruit Le with Headers - Assembled ADA3379

SparkFun expLoRaBLE Hookup Guide

This is the Adafruit Feather 32u4 Bluefruit - our take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and battery

Adafruit Feather 32u4 Bluefruit LE with Stacking Headers

Cutting-edge development in waste-recycled nanomaterials for energy storage and conversion applications

CircuitPython Motorized Camera Slider

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! This is the Adafruit Feather 32u4 Adalogger - our take on an 'all-in-one' datalogger (or data-reader) with built in USB and battery charging.

Adafruit Feather 32u4 Adalogger ADA2795

ADAFRUIT INDUSTRIES 1578 Lithium Ion Polymer Battery - 3.7v 500mAh : Health & Household

Lithium Ion Cylindrical Battery - 3.7v 2200mAh in Bangalore at best price by Fab.to.Lab - Justdial

Multimeter Tester Digital Multimeter with DC AC Voltmeter and Ohm Volt Amp Meter with AC DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, Non Contact: : Tools & Home Improvement