PowerBoost 1000 LiPo Charger 5V 1A Boost
By Adafruit (2465)
MCM Part #83-17681
The PowerBoost 1000C is the perfect power supply for your portable project. With a built-in load-sharing battery charger circuit, you will be able to keep your power-hungry project running even while recharging its battery! This tiny DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for running your 5V projects.
Note: Under full load this device generates a considerable amount of heat. This will require consideration when selecting a proper enclosure and preventing physical contact.