Alternatives?
  

  * https://www.amazon.com/DFROBOT-900mA-Solar-Panel-Controller/dp/B07MML4YJV/ref=sr_1_4?dchild=1&keywords=CN3065+solar&qid=1599225890&sr=8-4
  * https://www.amazon.com/HiLetgo-Charger-Lithium-Application-Charging/dp/B082F7X8WS/ref=sr_1_1?dchild=1&keywords=CN3065+solar&qid=1599225890&sr=8-1
  * https://www.youtube.com/watch?v=kEttqWJrdww