How to Make a Solar IPod/iPhone Charger -aka MightyMintyBoost : 5 Steps (with Pictures) - Instructables
LiPo USB Charger Hookup Guide Datasheet by SparkFun Electronics | Digi-Key Electronics
GitHub - sparkfun/LiPo_Charger_Plus: The SparkFun LiPo Charger Plus is the souped-up power option in the SparkFun line of single-cell lithium polymer ( LiPo) battery chargers