SparkFun Sunny Buddy - MPPT Solar Charger - Melopero Electronics
Battery Babysitter Hookup Guide - SparkFun Learn
Brett.io on Twitter: "Not proud of the aesthetics but it's just for testing. Reworking @sparkfun's Sunny Buddy solar battery charger to accommodate a 3S li-ion. Left resistors raises float voltage, right resistors
Sunny Buddy Solar Charger Hookup Guide - SparkFun Learn