USB LI-POLY BATTERY CHARGER, SINGLE CELL, BATTERY CHARG FOR SPARKFUN ELECTRONICS | eBay
SparkFun Electronics, Inc. - Don't miss out on our Deal of the Week! The SparkFun Battery Babysitter is half battery charger, half battery monitor, and all you'll ever need to keep your
GitHub - sparkfun/Photon_Battery_Shield: Battery Shield for the Spark Photon. Has a charging circuit, as well as a fuel gauge.
Lithium Ion Battery - 850mAh - PRT-13854 - SparkFun Electronics
SparkFun Power Cell - LiPo Charger/Booster
Lithium Ion Battery - 2Ah - PRT-13855 - SparkFun Electronics
SparkFun Inventor's Kit - V4.1 - PiShop.us
Amazon.com: SparkFun (PID 15217 LiPo Charger Plus USB-C Connector with MCP73833 : Toys & Games
Lithium Ion Battery - 1Ah - PRT-13813 - SparkFun Electronics