Tired of your phone running out of juice when you can't reach an outlet?
Make yourself an emergency charger and bring that battery back to life!
Lithium Ion Cylindrical Battery - 3.7V 2200mAh
Adafruit Mini Lipo w/Mini-B USB Jack - USB LiIon/LiPoly charger - v1
PowerBoost 500 Basic - 5V USB Boost @ 500mA from 1.8V+
Breadboard-friendly SPDT Slide Switch
More information on my website here: